阅读说明：本技术 用于护理角蛋白材料的组合物、其方法和用途 (Composition for caring for keratin materials, method and use thereof ) 是由 沈頔 王勇 于 2017-12-26 设计创作，主要内容包括：本公开涉及一种用于护理角蛋白材料的固体组合物,其包含按重量相对于组合物的总重量计：a)至少20重量%的至少一种含有4至30个-CH<Sub>2</Sub>CH<Sub>2</Sub>O-基团的聚乙二醇；b)至少一种固体脂肪醇；和c)选自两性或两性离子表面活性剂、阴离子表面活性剂、非离子表面活性剂或其混合物的至少一种表面活性剂。(The present disclosure relates to a solid composition for caring for keratin materials, comprising, by weight relative to the total weight of the composition: a) at least 20% by weight of at least one catalyst containing 4 to 30-CH 2 CH 2 Polyethylene glycol of O-group; b) at least one solid fatty alcohol; and c) at least one surfactant selected from amphoteric or zwitterionic surfactants, anionic surfactants, nonionic surfactants or mixtures thereof.)

1. A solid composition for caring for keratin materials, comprising, by weight relative to the total weight of the composition:

a) at least 20% by weight of at least one catalyst containing 4 to 30-CH₂CH₂Polyethylene glycol of O-group;

b) at least one solid fatty alcohol; and

c) at least one surfactant selected from amphoteric or zwitterionic surfactants, anionic surfactants, nonionic surfactants, or mixtures thereof.

2. The composition of claim 1, wherein the polyethylene glycol is a compound of formula (a)

H-(O-CH₂CH₂)_n-OH formula (A)

Wherein n is an integer from 4 to 30; preferably, n is 6 to 20; more preferably, n is 8 to 12; even more preferably, the polyethylene glycol is PEG-8.

3. The composition of claim 1 or 2, wherein the polyethylene glycol is present in an amount of from 20% to 90% by weight, preferably from 30% to 70% by weight, more preferably from 40% to 60% by weight, relative to the total weight of the composition.

4. The composition according to any one of claims 1 to 3, wherein the fatty alcohol is R-OH, wherein R denotes a linear hydrocarbon radical, saturated or unsaturated, optionally substituted with one or more hydroxyl groups, comprising from 12 to 30 carbon atoms; the solid fatty alcohol is preferably selected from myristyl alcohol, cetyl alcohol, palmitoleic alcohol, stearyl alcohol, arachidyl alcohol, behenyl alcohol, erucyl alcohol, xylyl alcohol, ceryl alcohol, melissyl alcohol, or a mixture thereof; cetyl alcohol, stearyl alcohol or mixtures thereof are preferred.

5. The composition of any of the preceding claims 1 to 4, wherein the fatty alcohol is present in an amount of from 1 wt% to 20 wt%, preferably from 2 wt% to 10 wt%, relative to the total weight of the composition.

6. Composition according to any one of the preceding claims 1 to 5, in which the amphoteric or zwitterionic surfactant is chosen from (C)₈-C₂₀) Alkyl betaines, (C)₈-C₂₀) Alkyl sulfobetaines, (C)₈-C₂₀) Alkylamide group (C)₁-C₆) Alkyl betaines such as cocamidopropyl betaine, and (C)₈-C₂₀) Alkylamide group (C)₁-C₆) Alkyl sulfobetaines and mixtures thereof; preferably selected from (C)₈-C₂₀) Alkylamide group (C)₁-C₆) An alkyl betaine; more preferably cocamidopropyl betaine.

7. The composition of any of the preceding claims 1 to 6, wherein the anionic surfactant is selected from the group consisting of:

- C₆-C₂₄in particular C₁₂-C₂₀An alkyl sulfate;

- C₆-C₂₄in particular C₁₂-C₂₀Alkyl ether sulfates; preferably from 2 to 20 ethylene oxide units;

- C₆-C₂₄in particular C₁₂-C₂₀Alkyl succinate sulfonates, especially lauryl succinate sulfonate;

- C₆-C₂₄in particular C₁₂-C₂₀Alkyl ether succinate sulfonates;

- (C₆-C₂₄) Acyl isethionates, preferably (C)₁₂-C₁₈) Acyl isethionates;

- C₆-C₂₄in particular C₁₂-C₂₀Acyl sarcosinates;

- (C₆-C₂₄) Alkyl ether carboxylates, preferably (C)₁₂-C₂₀) An alkyl ether carboxylate;

polyoxyalkylenated (C)₆-C₂₄) Alkyl (amido) ether carboxylic acids and salts thereof, especially containing from 2 to 50 alkylene oxides, especiallyThose of ethylene oxide groups;

- C₆-C₂₄in particular C₁₂-C₂₀Acyl glutamate;

- C₆-C₂₄in particular C₁₂-C₂₀Acyl glycinate;

or mixtures thereof;

more preferably selected from C₆-C₂₄In particular C₁₂-C₂₀Acyl glutamate; c₆-C₂₄In particular C₁₂-C₂₀Acyl glycinate; or mixtures thereof; even more preferably from sodium lauroyl glutamate, potassium cocoyl glycinate or mixtures thereof.

8. The composition of any of the preceding claims 1 to 7 wherein the nonionic surfactant is selected from the group consisting of condensates of ethylene oxide and propylene oxide with fatty alcohols; polyethoxylated fatty amides preferably having from 2 to 30 ethylene oxide units, polyglycerolated fatty amides containing on average from 1 to 5, in particular from 1.5 to 4, glycerol groups; preferably ethoxylated fatty acid sorbitan esters containing from 2 to 40 ethylene oxide units, fatty acid esters, such as fatty acid esters of glycerol, such as glyceryl stearate SE, fatty acid esters of sucrose, such as sucrose stearate, polyoxyalkylenated and preferably polyoxyethylenated fatty acid esters containing from 2 to 150 moles of ethylene oxide, including oxyethylenated vegetable oils, N- (C)_6-24Alkyl) glucosamine derivatives, amine oxides, e.g. (C)_10-14Alkyl) amine oxides or N- (C)_10-14Acyl) aminopropylmorpholine oxide, (C)_6-24Alkyl) polyglycosides or mixtures thereof; preferably selected from glyceryl stearate SE, sucrose stearate, (C)_8-18Alkyl) (poly) glycosides or mixtures thereof.

9. The composition of any of the preceding claims 1 to 8, wherein the surfactant is present in an amount of from 1 wt% to 20 wt%, preferably from 2 wt% to 10 wt%, relative to the total weight of the composition.

10. The right aboveThe composition according to any one of claims 1 to 9, further comprising at least one C-containing compound different from polyethylene glycol a)₂-C₈Additional polyols of carbon chain.

11. The composition of any of the preceding claims 1 to 10 wherein the polyol is selected from glycerol, propylene glycol, dipropylene glycol, butylene glycol, hexylene glycol or mixtures thereof; the polyol is preferably glycerol.

12. The composition of any one of the preceding claims 1 to 11, wherein the polyol, when present, is present in an amount ranging from 0.1% to 50% by weight, preferably from 10% to 40% by weight, relative to the total weight of the composition.

13. The composition of any of the preceding claims 1 to 12, wherein the composition is anhydrous.

14. Solid composition for cleansing and/or removing makeup from keratin materials, in particular the skin, comprising, by weight relative to the total weight of the composition:

a) less than or equal to 5 wt% water;

b) 40 to 60% by weight of PEG-8;

c) 2 to 10% by weight of at least one solid fatty alcohol selected from cetyl alcohol, stearyl alcohol or mixtures thereof;

d) 2 to 10% by weight of at least one anionic surfactant selected from sodium lauroyl glutamate, potassium cocoyl glycinate or mixtures thereof; and

e) 10 to 40% by weight of glycerol.

15. Process for caring for keratin materials, in particular for cleansing and/or removing makeup from keratin materials, comprising the application on the keratin materials of a composition according to any one of the preceding claims 1 to 14.

Technical Field

The present disclosure relates to compositions that provide good cleansing and/or makeup removal capabilities as well as good feel to the skin. In particular, the composition provides a warming effect to the skin and is therefore useful for deep cleansing and/or make-up removal of the skin.

Background

In the field of cleansing and/or makeup removing compositions, "soft solid" compositions constitute a class of products that are favored by consumers because of their cleansing efficacy, makeup removal, rinsability, and their cosmetic qualities (softness, dry feel, ease of use, etc.). They are known as solid compositions which soften under stress, such as by spreading on the skin surface or, for example, by extrusion from a device with porous walls (a grid).

Consumers are pursuing "soft solid" type compositions for cleansing the skin and/or removing make-up that do not leave any residue on the skin and leave a fresh skin finish (skin finish) while being easily applied to the skin.

Some known soft solid compositions useful for cleansing the skin and/or removing makeup comprise silica aerogel particles, a wax, a hydrocarbon-based oil, and a nonionic surfactant.

However, consumers often find this type of product to be less effective in cleansing the skin, particularly the pores of the skin.

On the other hand, warm cleansers are popular due to their ability to open pores and thus deeply cleanse the skin. One of the main technologies of warm detergents on the market is the use of inorganic salts or zeolites, which decompose on contact with water to produce an exothermic reaction. However, the salt reacts so strongly with water that it often provides uncomfortable and instantaneous overheating, which is not permanent and cannot be controlled as expected.

Last but not least, the unique use experience of cosmetics is of increasing interest to consumers in addition to the above properties. In particular, cosmetics that provide a comfortable and perceptible transformation (transformation) during application are consistently favored by consumers.

However, the above-mentioned prior art does not provide compositions for cleansing and/or removing make-up from the skin having the above-mentioned properties.

There is therefore a need to formulate solid compositions for caring for keratin materials, in particular for the cleansing and/or makeup removal of keratin materials, with improved deep-cleansing effect and a unique use experience.

Such deep cleaning effect is made possible and perceptible by the warming effect of the product when applied.

The unique use experience means that the composition of the invention transforms from a solid composition to a liquid oily composition during application on keratin materials, in particular the skin.

Furthermore, it is desirable to formulate such compositions having all of the above properties and which are stable over time.

DISCLOSURE OF THE INVENTION

It is an object of the present invention to provide a solid composition for caring for keratin materials which overcomes the technical problems described above.

The present invention aims to provide a deep cleansing effect for compositions for caring for keratin materials, in particular for cleansing and/or removing make-up from the skin.

The present invention aims to provide a composition for cleansing and/or removing make-up from keratin materials that provides good lathering during application.

The present invention aims to provide a composition for cleansing and/or removing make-up from keratin materials which provides a good skin feel after application.

Thus, the inventors have found that a combination of at least 20% by weight of at least one specific polyethylene glycol, at least one solid fatty alcohol and at least one specific surfactant achieves the objects of the present invention.

The present invention provides a warming effect. By "warming effect" is meant the temperature increase perceived on the keratin material when the composition of the present invention is applied as a cleanser.

By "unique use experience" is meant the transformation in texture of the composition of the present invention during application. In particular, it refers to the phenomenon of the composition of the invention converting from a solid composition to a liquid oily composition when applied to the skin with the fingers. Such conversion provides a sensation of melting on the skin of the composition according to the invention, thus enhancing the sensation of the warming effect.

By "skin feel" is meant a fresh, moist (water) and mild feel after application of the composition of the present invention.

The term "keratin material" as used herein is understood to mean skin, nails or mucous membranes, and in at least one embodiment, skin.

More particularly, the present invention also aims to provide a composition for cleansing and/or removing makeup from keratin materials having good foaming properties.

The present invention also aims to provide such compositions having good storage stability. By "stability" is meant a composition that does not undergo any significant change in its structure or properties for at least one month, particularly for at least two months, after its manufacture.

The invention also relates to a method for cleansing and/or removing makeup from keratinous materials, in particular the skin, in which a composition according to the invention is applied to the keratinous materials, in particular the skin.

Other features and advantages of the present invention will become more apparent upon reading the following specification and examples.

In the following, the expression "at least one" is equivalent to "one or more", and the limits of the numerical ranges are included in the range, unless otherwise specified.

Description of the drawings

Figure 1 shows the temperature rise and the duration of the temperature rise when water is mixed with PEG-8, glycerol and propylene glycol, respectively.

Detailed Description

The composition according to the invention is therefore a solid composition for caring for keratin materials, comprising, by weight relative to the total weight of the composition:

a) at least 20% by weight of at least one catalyst containing 4 to 30-CH₂CH₂Polyethylene glycol of O-group; and

b) at least one solid fatty alcohol; and

c) at least one surfactant selected from amphoteric or zwitterionic surfactants, anionic surfactants, nonionic surfactants, or mixtures thereof.

Polyethylene glycol

The compositions according to the invention therefore comprise at least 20% by weight of at least one alcohol containingHaving 4 to 30-CH₂CH₂Polyethylene glycol of the O-group.

According to the present invention, polyethylene glycol (also referred to as PEG) is a polyether compound having the structure of formula (A),

H-(O-CH₂CH₂)_n-OH formula (A)

Wherein n is an integer from 4 to 30.

As polyethylene glycols there may be mentioned, for example, PEG-4 sold under the trade name Breox PEG 200 by BP, PEG-6 sold under the trade name Carbowax Sentry PEG 300 by Dow chemical, PEG-6 sold under the trade name Pluracare by BASF^®PEG-8 sold by E400 (or Polyethylene Glycol 400 (Polyethylene 400)), PEG-12 sold by Dow Chemical under the name Carbowax Sentry Polyethylene Glycol 600NF, FCC Grade, PEG-20 sold by Dow Chemical under the name Carbowax Sentry Polyethylene Glycol 1000 NF, FCC Grade, or mixtures thereof.

According to a preferred embodiment, the polyethylene glycol suitable for use in the present invention comprises 6 to 20, more preferably 8 to 12, -CH₂CH₂An O-group.

According to a most preferred embodiment, PEG-8 is used in the present invention.

According to the invention, the polyethylene glycol is present in an amount ranging from 20% to 90% by weight, preferably from 30% to 70% by weight and more preferably from 40% to 60% by weight relative to the total weight of the composition.

Solid fatty alcohols

The composition of the invention comprises at least one solid fatty alcohol.

The term "fatty alcohol" refers to long chain aliphatic alcohols comprising from 8 to 40 carbon atoms, preferably from 12 to 34 or even from 12 to 30 carbon atoms, and comprising at least one hydroxyl group OH. These fatty alcohols are neither oxyalkylenated nor glycerinated.

"solid fatty alcohol" is solid at room temperature (25 ℃) and atmospheric pressure (780 mmHg or 1 atm.); they are insoluble in water, i.e. they have a water solubility of less than 1% by mass, preferably less than 0.5% by weight.

Preferably, the solid fatty alcohol has the structure R-OH, wherein R denotes a linear hydrocarbon radical, saturated or unsaturated, optionally substituted with one or more hydroxyl groups, containing from 12 to 30 carbon atoms.

Preferably, the solid fatty alcohol used in the present invention is selected from fatty alcohols having from 12 to 30 carbon atoms.

As the solid fatty alcohol, there may be mentioned lauryl alcohol, myristyl alcohol (1-tetradecanol), cetyl alcohol (1-hexadecanol), palmitoyl alcohol (cis-9-hexadecen-1-ol), stearyl alcohol (1-octadecanol), arachidyl alcohol (1-eicosanol), behenyl alcohol (1-docosanol), erucyl alcohol (erucyl alcohol) (cis-13-eicosadien-1-ol), lignoceryl alcohol (1-tetracosanol), ceryl alcohol (1-hexacosanol), ceryl alcohol (myricyl alcohol) or melissyl alcohol (1-triacontanol).

More preferably, according to the invention, the solid fatty alcohol is chosen from alcohols having from 12 to 22 carbon atoms, such as lauryl alcohol, cetyl alcohol (1-cetyl alcohol), stearyl alcohol (1-stearyl alcohol), arachidyl alcohol (1-arachidyl alcohol), behenyl alcohol (1-behenyl alcohol) or mixtures thereof.

More particularly, the solid fatty alcohol is selected from cetyl alcohol (1-cetyl alcohol), stearyl alcohol (1-stearyl alcohol) or mixtures thereof.

As fatty alcohol, mention may be made of cetyl alcohol sold by BASF under the name Lanete 16.

The fatty alcohols may be mixtures, which means that for example several species may coexist in the commercial product as a mixture, in particular with different chain lengths.

As such fatty alcohol mixture, mention may be made of Lanete as BASF^®Oror is cetostearyl alcohol sold under the name cetearyl alcohol, which contains mainly a mixture of cetyl alcohol and stearyl alcohol.

According to one embodiment, the solid fatty alcohol is present in an amount ranging from 1% to 20% by weight, preferably from 2% to 10% by weight, relative to the total weight of the composition.

Surface active agent

The composition of the present invention comprises at least one surfactant selected from amphoteric or zwitterionic surfactants, anionic surfactants, nonionic surfactants or mixtures thereof. For the purposes of the present invention, these surfactants are selected based on their lathering and cleansing properties.

According to one embodiment, the surfactant may be selected from amphoteric or zwitterionic surfactants.

The amphoteric or zwitterionic surfactants useful in the present invention can be secondary or tertiary, optionally quaternized, aliphatic amine derivatives wherein the aliphatic group is a straight or branched chain comprising from 8 to 22 carbon atoms, said amine derivatives containing at least one anionic group, such as a carboxylate, sulfonate, sulfate, phosphate or phosphonate group.

Mention may in particular be made of betaine, (C)₈-C₂₀) Alkyl betaines, (C)₈-C₂₀) Alkyl sulfobetaines, (C)₈-C₂₀) Alkylamide group (C)₁-C₆) Alkyl betaines such as cocamidopropyl betaine, and (C)₈-C₂₀) Alkylamide group (C)₁-C₆) Alkyl sulfobetaines and mixtures thereof.

Among the optionally quaternized secondary or tertiary aliphatic amine derivatives which may be used, mention may also be made of the products having the following structures (a1) and (a2), respectively:

(A1) R_a-CON(Z)CH₂-(CH₂)_m-N⁺(R_b)(R_c)(CH₂COO^-)

wherein:

R_arepresents a derivative derived from an acid R preferably present in hydrolysed coconut oil_aC of COOH₁₀-C₃₀Alkyl or alkenyl, heptyl, nonyl or undecyl;

R_brepresents β -hydroxyethyl group, and has good water solubility,

R_crepresents a carboxymethyl group;

m is equal to 0, 1 or 2,

z represents a hydrogen atom or a hydroxyethyl or carboxymethyl group;

(A2) R_a’-CON(Z)CH₂-(CH₂)_m’-N(B)(B')

wherein:

b represents-CH 2CH2OX ', wherein X' represents-CH₂-COOH、CH₂-COOZ’、CH₂CH₂-COOH、-CH₂CH₂-COOZ' or a hydrogen atom,

b' represents- (CH)₂)_z-Y ', wherein z = 1 or 2 and Y ' represents COOH, COOZ ', CH₂-CHOH-SO₃H or-CH₂-CHOH-SO₃Z’，

m' is equal to 0, 1 or 2,

z represents a hydrogen atom or a hydroxyethyl or carboxymethyl group,

z' represents an ion derived from an alkali metal or alkaline earth metal, such as sodium, potassium or magnesium; an ammonium ion; or from organic amines, in particular from aminoalcohols such as monoethanolamine, diethanolamine and triethanolamine, monoisopropanolamine, diisopropanolamine or triisopropanolamine, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1, 3-propanediol and tris (hydroxymethyl) aminomethane,

R_a'represents the acid R preferably present in hydrolysed linseed oil or coconut oil_a'C of COOH₁₀-C₃₀Alkyl or alkenyl, alkyl, especially C₁₇Alkyl radicals and their isomeric forms (iso form), or unsaturated C₁₇A group.

Compounds corresponding to formula (A2) are preferred.

Among the compounds corresponding to formula (a2) in which X' represents a hydrogen atom, mention may be made of the compounds classified in the CTFA dictionary under the names sodium cocoamphoacetate, sodium lauroamphoacetate, sodium decanoamphoacetate and sodium octanoamphoacetate.

Further compounds corresponding to formula (A2) are disodium cocoyl amphodiacetate, disodium lauroamphodiacetate, disodium decanoamphodiacetate, disodium octanoamphodiacetate, disodium cocoyl amphodipropionate, disodium lauroamphodipropionate, disodium decanoamphodipropionate, disodium octanoamphodipropionate, disodium lauroamphodipropionate and cocoamphodipropionate.

Examples which may be mentionedIncluding Rhodia under the Miranol trade name^®Cocoamphodiacetate sold by C2M Concentrate, sodium cocoamphoacetate sold under the trade name Miranol Ultra C32 and a product sold by Chimex corporation under the trade name CHIMEXANE HA.

Compounds of formula (A3) may also be used:

(A3) R_a’’-NH-CH(Y’’)-(CH₂)_n-C(O)-NH-(CH₂)_n’-N(R_d)(R_e)

wherein:

- R_a''represents the acid R preferably present in hydrolysed linseed oil or coconut oil_a''C of-C (O) OH₁₀-C₃₀An alkyl or alkenyl group;

y' represents a group-C (O) OH, -C (O) OZ ", -CH₂-CH(OH)-SO₃H or a group CH₂-CH(OH)-SO₃-Z ", wherein Z" represents a cationic counterion from an alkali or alkaline earth metal, such as sodium, an ammonium ion or an ion from an organic amine;

- R_dand R_eIndependently of one another represent C₁-C₄An alkyl or hydroxyalkyl group; and is

N and n' independently of one another denote an integer from 1 to 3.

Among the compounds corresponding to formula (a3), mention may be made in particular of the compounds classified in the CTFA dictionary under the name diethylaminopropyl coco-asparagine sodium, such as the one sold by the Chimex company under the name CHIMEXANE HB.

Preferably, the amphoteric or zwitterionic surfactants are selected from (C)₈-C₂₀) Alkyl betaines, (C)₈-C₂₀) Alkylamide group (C)₁-C₆) Alkyl betaines, (C)₈-C₂₀) Alkyl amphoacetates and (C)₈-C₂₀) Alkyl amphodiacetate salts and mixtures thereof, preferably (C)₈-C₂₀) Alkylamide group (C)₁-C₆) Alkyl betaines, especially cocamidopropyl betaine.

Mention may be made of EVONIK GOLDSCHMIDT, Inc. as TEGO^®BETA IN CK D is sold as cocamidopropyl betaine.

According to one embodiment, the surfactant may be selected from anionic surfactants.

The term "anionic surfactant" refers to a surfactant that contains only anionic groups as ionic or ionizable groups.

In this specification, a species is referred to as "anionic" when it bears at least one permanent negative charge or when it is ionizable as a negatively charged species under the conditions of use (e.g., medium or pH) of the composition of the invention and does not contain any cationic charge.

The anionic surfactant may be a sulfate, sulfonate and/or carboxylic acid (or carboxylate) surfactant. Needless to say, a mixture of these surfactants may be used.

In the present description it is to be understood that:

carboxylate anionic surfactants comprising at least one carboxylic acid or carboxylate function (-COOH or-COO)^-) And may optionally also contain one or more sulfate and/or sulfonate functionalities;

the sulfonate anionic surfactant comprises at least one sulfonate function (-SO)₃H or-SO₃ ^–) And optionally also comprising one or more sulfate functions, but not comprising any carboxylate functions; and

sulphate anionic surfactants comprise at least one sulphate function, but do not comprise any carboxylate or sulphonate function.

Useful carboxylic anionic surfactants thus comprise at least one carboxylic acid or carboxylate function (-COOH or-COO)^-）。

They may be selected from the following compounds: an amino acid anionic surfactant; alkyl-D-galactosyl uronic acid (alkyl-D-galactosyldiuronic acid), alkyl ether carboxylic acid, alkyl (C)_6-30Aryl) ether carboxylic acids, alkyl amido ether carboxylic acids; and salts of these compounds;

the alkyl and/or acyl groups of these compounds contain from 6 to 30 carbon atoms, in particular from 12 to 28, better still from 14 to 24 or even from 16 to 22 carbon atoms; aryl preferably means phenyl or benzyl;

these compounds are optionally polyoxyalkylenated, in particular polyoxyethylenated, and then preferably comprise from 1 to 50 ethylene oxide units, better still from 2 to 10 ethylene oxide units.

C of the polyglycoside polycarboxylic acids may also be used₆-C₂₄Alkyl monoesters, e.g. C₆-C₂₄Alkyl polyglycoside citric acid ester, C₆-C₂₄Alkyl polyglycoside tartaric acid esters and C₆-C₂₄Alkyl polyglycoside sulfosuccinates, and salts thereof.

In one embodiment, the anionic amino acid surfactant is derived from a carboxylate salt of an amino acid, wherein the amine group located at the α -carbon or β -carbon of the amino acid salt is substituted with a C₈To C₂₂Acylation of the fatty acid derivative.

The amine group at the α -carbon or β -carbon of the neutralized amino acid is acylated with a fatty acid halide (acid halide) in the presence of a base by the well-known Schotten-Baumann reaction to produce an amide, thereby forming the desired surfactant reaction product, i.e., an amino acid surfactant₈To C₂₂Fatty acids are prepared by reaction with thionyl halides (bromine, chlorine, fluorine and iodine). Representative acid halides include, but are not limited to, acid chlorides selected from the group consisting of decanoyl chloride, dodecanoyl chloride (lauroyl chloride), cocoyl chloride (coconut oil derived fatty acid chloride), tetradecanoyl chloride (myristoyl chloride), hexadecanoyl chloride (palmitoyl chloride), octadecanoyl chloride (stearoyl chloride), 9-octadecenoyl chloride (oleanoyl chloride), eicosanoyl chloride (arachidoyl chloride), docosanoyl chloride (behenoyl chloride), and any mixtures thereof. Other acid halides include bromides, fluorides, and iodides of the above fatty acids. U.S. patent application publication No. published on 21/8/20082008/0200704, which is incorporated herein by reference, describes a method for preparing an acid halide and an alternative method for acylating an amino acid.

In one embodiment, the amino acid surfactant is represented by formula (I):

formula (I)

Wherein:

z represents a saturated or unsaturated, linear or branched hydrocarbon radical having from 8 to 22 carbon atoms,

x is hydrogen or a methyl group,

n is a number of 0 or 1,

y is selected from hydrogen, -CH₃、-CH(CH₃)₂、-CH₂CH(CH₃)₂、-CH(CH₃)CH₂CH₃、-CH₂C₆H₅、-CH₂C₂H₄OH、-CH₂OH、-CH(OH)CH₃、-(CH₂)₄NH₂、-(CH₂)₃NHC(NH)NH₂、-CH₂C(O)O^-M⁺、-(CH₂)₂C(O)OH、-(CH₂)₂C(O)O^-M⁺And is and

m is a salt-forming cation, wherein COO is a counter anion, such as sodium, potassium, ammonium, or triethanolamine.

According to one embodiment of the invention, in formula (I):

z represents saturated or unsaturated, linear or branched C₈To C₂₂An alkyl group, a carboxyl group,

x is hydrogen or a methyl group,

n is a number of 0, and n is,

y is selected from hydrogen, - (CH)₂)₂C(O)OH、-(CH₂)₂C(O)O^-M⁺And is and

m is a salt-forming cation, wherein COO is a counter anion, such as sodium, potassium, ammonium, or triethanolamine.

Examples of amino acid surfactants are salts of alanine, arginine, aspartic acid, glutamic acid, glycine, isoleucine, leucine, lysine, phenylalanine, serine, tyrosine, valine, sarcosine and any mixtures thereof. More specifically, the following amino acid surfactants may be mentioned: dipotassium octanoyl glutamate, dipotassium undecylenoyl glutamate, disodium octanoyl glutamate, disodium cocoyl glutamate, disodium lauroyl glutamate, disodium stearoyl glutamate, disodium undecylenoyl glutamate, potassium octanoyl glutamate, potassium cocoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, potassium undecylenoyl glutamate, sodium octanoyl glutamate, sodium cocoyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium olive oleoyl glutamate, sodium palmitoyl glutamate, sodium stearoyl glutamate, sodium undecylenoyl glutamate, sodium cocoyl methyl beta-alaninate, lauroyl methyl beta-alaninate, myristoyl beta-alaninate, potassium lauroyl methyl beta-alaninate, sodium cocoyl-methyl beta-alaninate, sodium lauroyl, Sodium and sodium myristyl methyl β -alaninates, palmitoyl glycinate, sodium lauroyl glycinate, sodium cocoyl glycinate, sodium myristoyl glycinate, potassium lauroyl glycinate, potassium cocoyl glycinate, potassium lauroyl sarcosinate, potassium cocoyl sarcosinate, sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium oleoyl sarcosinate, sodium palmitoyl sarcosinate, ammonium lauroyl sarcosinate, sodium lauroyl aspartates, sodium myristoyl aspartates, sodium cocoyl aspartates, sodium caproyl aspartates, disodium lauroyl aspartates, disodium myristoyl aspartates, disodium cocoyl aspartates, disodium caproyl aspartates, potassium lauroyl aspartates, potassium myristoyl aspartates, potassium cocoyl aspartates, potassium caproyl aspartates, dipotassium lauroyl aspartates, sodium lauroyl glycinate, sodium lauroyl sarcosinate, disodium myristoyl aspartates, sodium lauroyl aspartates, sodium, Dipotassium myristoyl aspartate, dipotassium cocoyl aspartate, dipotassium hexanoyl aspartate, and mixtures thereof.

More preferably, in formula (I):

z represents a saturated or unsaturated linear C₈To C₂₂An alkyl group, a carboxyl group,

x is hydrogen or a methyl group,

n is a number of 0, and n is,

y is selected from hydrogen or- (CH)₂)₂C (O) OH, and

m is a salt-forming cation, wherein COO is a counter anion, such as sodium, potassium, ammonium, or triethanolamine.

As commercially available amino acid surfactants there may be mentioned, for example, acyl sarcosinates, for example Sarkosyl NL 97 from Ciba^®Sold under the name Oramix L30 by SEPPIC^®Sodium lauroyl Sarcosinate sold under the name Nikkol, Nikkol Sarcosinate MN^®Sodium Sarcosinate myristoyl sold under the name Nikkol or Nikkol Sarcosinate PN by the company Nikkol^®Sodium palmitoyl sarcosinate sold under the name; alanine salts, for example Sodium Nikkol Alaninate LN 30 from Nikkol^®Sold under the name Alanone ALE by Kawaken^®Sodium N-lauroyl-N-methylaminopropionate sold under the name Kawaken, and Alanone Alta by Kawaken^®Sold under the name of N-lauroyl-N-methylalanine triethanolamine; n-acyl glutamates, e.g. Amisoft by Ajinomoto^®LS 11 is sodium lauroyl glutamate sold under the name Acylglutamate CT-12 by Ajinomoto^®Triethanolamine mono-cocoyl glutamate sold under the name Acylglutamate LT-12 by Ajinomoto^®Triethanolamine lauroyl glutamate sold under the name,; glycinates, e.g. Amilite GCS-12 from Ajinomoto^®Sodium N-cocoyl glycinate sold under the name sodium N-cocoyl glycinate, potassium cocoyl glycinate sold under the name Eversoft YCK-100K by SinoLion company; aspartate, for example from Mitsubishi as Asparack^®Is a mixture of triethanolamine N-lauroyl aspartate and triethanolamine N-myristoyl aspartate sold under the name Triethanolamine; citrate salts, and any mixtures thereof.

Among the above carboxylic acid surfactants, mention may also be made of polyoxyalkylene alkyl (amido) ether carboxylic acids and salts thereof, in particular those comprising from 2 to 50 alkylene oxide, in particular ethylene oxide, groups, such as the compounds sold under the name Akypo by the Kao company.

Useful polyoxyalkylene alkyl (amido) ether carboxylic acids are preferably selected from those of formula (1):

wherein:

- R₁represents a straight or branched chain C₆-C₂₄Alkyl or alkenyl, alkyl (C)₈-C₉) Phenyl, radical R₂CONH-CH₂-CH₂-, wherein R₂Means straight or branched C₉-C₂₁An alkyl group or an alkenyl group, or a substituted or unsubstituted alkyl group,

preferably, R₁Is C₈-C₂₀Preferably C₈-C₁₈Alkyl, and aryl preferably means phenyl,

n is an integer or decimal (average) from 2 to 24, preferably from 2 to 10,

-A is H, ammonium, Na, K, Li, Mg or a monoethanolamine or triethanolamine residue.

It is also possible to use mixtures of compounds of the formula (1), in particular containing different radicals R₁A mixture of compounds of (a).

Particularly preferred polyoxyalkylenated alkyl (amido) ether carboxylic acids are those of formula (1) wherein:

- R₁is referred to as C₁₂-C₁₄Alkyl, cocoyl, oleyl, nonylphenyl or octylphenyl,

-A is a hydrogen or sodium atom, and

n is from 2 to 20, preferably from 2 to 10, and is not equal.

More preferably, compounds of formula (1) are used, wherein R₁Is referred to as C₁₂Alkyl, A denotes a hydrogen or sodium atom and n is 2 to 10.

Preferably, the carboxylic anionic surfactant is selected from, alone or as a mixture:

acyl glutamates, especially C₆-C₂₄Or even C₁₂-C₂₀；

Acyl sarcosinates, especially C₆-C₂₄Or even C₁₂-C₂₀；

Acyl lactates, especially C₁₂-C₂₈Or even C₁₄-C₂₄；

- C₆-C₂₄In particular C₁₂-C₂₀Acyl glycinate;

- (C₆-C₂₄) Alkyl ether carboxylates, especially (C)₁₂-C₂₀) An alkyl ether carboxylate;

polyoxyalkylenated (C)₆-C₂₄) Alkyl (amido) ether carboxylic acids, particularly those containing from 2 to 50 ethylene oxide groups;

in particular in the form of alkali or alkaline earth metal, ammonium or amino alkoxides.

Useful sulfonate anionic surfactants contain at least one sulfonate function (-SO)₃H or-SO₃ ^–）。

They may be selected from the following compounds: alkyl sulfonates, alkylamide sulfonates, alkylaryl sulfonates, α -olefin sulfonates, paraffin sulfonates (paraffinsulfonates), alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkylamide sulfosuccinates, alkyl sulfoacetates, N-acyl taurates, acyl isethionates; alkyl sulfolaurate esters; and salts of these compounds;

the alkyl group of these compounds comprises from 6 to 30 carbon atoms, in particular from 12 to 28, better still from 14 to 24 or even from 16 to 22 carbon atoms; aryl preferably means phenyl or benzyl; these compounds may be polyoxyalkylenated, in particular polyoxyethylenated, and then preferably comprise from 1 to 50 ethylene oxide units, better still from 2 to 10 ethylene oxide units.

Preferably, the sulphonate anionic surfactant is selected from, alone or as a mixture:

- C₆-C₂₄in particular C₁₂-C₂₀Alkyl succinate sulfonates, especially lauryl succinate sulfonate;

- C₆-C₂₄in particular C₁₂-C₂₀Alkyl ether succinate sulfonates;

- (C₆-C₂₄) Acyl isethionates, preferably (C)₁₂-C₁₈) An acyl isethionate salt which is a salt of acyl isethionic acid,

in particular in the form of alkali or alkaline earth metal, ammonium or amino alkoxides.

Useful sulfate anionic surfactants contain at least one sulfate function (-OSO)₃H or-OSO₃ ^-）。

They may be selected from the following compounds: alkyl sulfates, alkyl ether sulfates, alkylamido ether sulfates, alkylaryl polyether sulfates, monoglyceride sulfates; and salts of these compounds;

the alkyl group of these compounds comprises from 6 to 30 carbon atoms, in particular from 12 to 28, better still from 14 to 24 or even from 16 to 22 carbon atoms; aryl preferably means phenyl or benzyl; these compounds may be polyoxyalkylenated, in particular polyoxyethylenated, and then preferably comprise from 1 to 50 ethylene oxide units, better still from 2 to 10 ethylene oxide units.

The sulphate anionic surfactant is preferably selected from, alone or as a mixture:

alkyl sulfates, especially C₆-C₂₄Or even C₁₂-C₂₀,

Alkyl ether sulfates, especially C₆-C₂₄Or even C₁₂-C₂₀Preferably from 2 to 20 ethylene oxide units; in particular in the form of alkali or alkaline earth metal, ammonium or amino alkoxides.

When the anionic surfactant is in the form of a salt, the salt may be selected from alkali metal salts, such as sodium or potassium salts, ammonium salts, amine salts, particularly amino alcohol salts, and alkaline earth metal salts, such as magnesium salts.

Examples of amino alkoxides which may be mentioned include monoethanolamine, diethanolamine and triethanolamine salts, monoisopropanolamine, diisopropanolamine or triisopropanolamine salts, 2-amino-2-methyl-1-propanolamine, 2-amino-2-methyl-1, 3-propanediol salts and tris (hydroxymethyl) aminomethane salts.

Preference is given to using alkali metal or alkaline earth metal salts, in particular sodium or magnesium salts.

The anionic surfactant is preferably selected from, alone or as a mixture:

- C₆-C₂₄in particular C₁₂-C₂₀An alkyl sulfate;

- C₆-C₂₄in particular C₁₂-C₂₀Alkyl ether sulfates; preferably from 2 to 20 ethylene oxide units;

- C₆-C₂₄in particular C₁₂-C₂₀Alkyl succinate sulfonates, especially lauryl succinate sulfonate;

- C₆-C₂₄in particular C₁₂-C₂₀Alkyl ether succinate sulfonates;

- (C₆-C₂₄) Acyl isethionates, preferably (C)₁₂-C₁₈) Acyl isethionates;

- C₆-C₂₄in particular C₁₂-C₂₀Acyl sarcosinates;

- (C₆-C₂₄) Alkyl ether carboxylates, preferably (C)₁₂-C₂₀) An alkyl ether carboxylate;

polyoxyalkylenated (C)₆-C₂₄) Alkyl (amido) ether carboxylic acids and salts thereof, particularly those containing from 2 to 50 alkylene oxide groups, particularly ethylene oxide groups;

- C₆-C₂₄in particular C₁₂-C₂₀Acyl glutamate;

- C₆-C₂₄in particular C₁₂-C₂₀Acyl glycinate;

in particular in the form of alkali or alkaline earth metal, ammonium or amino alkoxides.

More preferably, the anionic surfactant is selected from, alone or as a mixture:

- C₆-C₂₄in particular C₁₂-C₂₀Acyl glutamate;

- C₆-C₂₄in particular C₁₂-C₂₀Acyl glycinate;

according to a preferred embodiment, the anionic surfactant is selected from sodium lauroyl glutamate, potassium cocoyl glycinate or mixtures thereof.

According to yet another embodiment, the surfactant may be selected from nonionic surfactants.

They may be chosen from alcohols, α -diols and (C)_1-20) Alkylphenols, these compounds being polyethoxylated and/or polypropoxylated and/or polyglycerolated, the number of ethylene oxide and/or propylene oxide groups possibly being from 1 to 100 and the number of glycerol groups possibly being from 2 to 30; or these compounds comprise at least one fatty chain comprising from 8 to 30 carbon atoms, in particular from 16 to 30 carbon atoms.

Mention may also be made of condensates of ethylene oxide and propylene oxide with fatty alcohols; polyethoxylated fatty amides preferably having from 2 to 30 ethylene oxide units, polyglycerolated fatty amides containing on average from 1 to 5, in particular from 1.5 to 4, glycerol groups; preferably ethoxylated fatty acid sorbitan esters containing from 2 to 40 ethylene oxide units, fatty acid esters, such as fatty acid esters of glycerol, such as glyceryl stearate SE, fatty acid esters of sucrose, such as sucrose stearate, polyoxyalkylenated and preferably polyoxyethylenated fatty acid esters containing from 2 to 150 moles of ethylene oxide, including oxyethylenated vegetable oils, N- (C)_6-24Alkyl) glucosamine derivatives, amine oxides, e.g. (C)_10-14Alkyl) amine oxides or N- (C)_10-14Acyl) aminopropylmorpholine oxide.

Mention may also be made of nonionic surfactants of the alkyl (poly) glycoside type, in particular represented by the following general formula: r₁O-(R₂O)_t-(G)_v

Wherein:

- R₁represents a linear or branched alkyl or alkenyl group comprising from 6 to 24 carbon atoms, in particular from 8 to 18 carbon atoms, or an alkylphenyl group, the linear or branched alkyl group of which comprises from 6 to 24 carbon atoms, in particular from 8 to 18 carbon atoms;

- R₂represents a group containing 2 to 4 carbon atomsAn alkyl group, a carboxyl group,

-G represents a sugar unit comprising 5 to 6 carbon atoms,

-t is a value from 0 to 10, preferably from 0 to 4,

-v means a value from 1 to 15, preferably from 1 to 4.

Preferably, the alkylpolyglycoside surfactant is a compound of the formula wherein:

- R₁refers to a linear or branched, saturated or unsaturated alkyl group containing from 8 to 18 carbon atoms,

- R₂represents an alkylene group containing 2 to 4 carbon atoms,

-t is a value from 0 to 3, preferably equal to 0,

-G means glucose, fructose or galactose, preferably glucose;

the degree of polymerization, i.e. the value of v, may be from 1 to 15, preferably from 1 to 4; the average degree of polymerization is more particularly between 1 and 2.

The glycosidic linkages between the saccharide units are generally of the 1-6 or 1-4 type, preferably of the 1-4 type. Preferably, the alkyl (poly) glycoside surfactant is an alkyl (poly) glucoside surfactant. C₈/C₁₆Alkyl (poly) glycosides 1,4, especially decyl glucoside (decyl glucoside) and octyl/decyl glucoside (caproyl/caproyl glucoside) are most particularly preferred.

Among the commercial products, mention may be made of the COGNIS company at PLANTAREN^®(600 CS/U, 1200 and 2000) or PLANTACARE^®(818, 1200 and 2000) are products sold under the name; products sold by SEPPIC under the names ORAMIX CG 110 and ORAMIXNS 10; the product sold under the name LUTENSOL GD 70 by BASF, or AG10LK by CHEM Y.

Optionally, glyceryl stearate SE may be used, such as Tegin sold by Evonik Goldschmidt^®Pelles, sucrose stearates, e.g. Tego sold by Evonik Goldschmidt^®Care SE 121，C₈/C₁₆Alkyl (poly) glycosides 1,4, especially as 53% aqueous solutions, such as Cognis under the designation Plantacare^®818 UP those sold.

Preferably, the nonionic surfactant is selected fromGlyceryl self-stearate SE, sucrose stearate, (C)_8-18Alkyl) (poly) glycosides and mixtures thereof.

According to a preferred embodiment, the composition of the invention comprises at least one surfactant selected from anionic amino acid surfactants.

More preferably, the surfactants suitable for use in the compositions of the present invention are selected from, alone or as a mixture:

- C₆-C₂₄in particular C₁₂-C₂₀Acyl glutamate;

- C₆-C₂₄in particular C₁₂-C₂₀Acyl glycinate;

according to a particularly preferred embodiment, the anionic surfactant is selected from sodium lauroyl glutamate, potassium cocoyl glycinate or mixtures thereof.

According to one embodiment, the surfactant is present in an amount ranging from 1% to 20% by weight, preferably from 2% to 10% by weight, relative to the total weight of the composition.

Anhydrous compositions

Optionally, the compositions of the present invention are anhydrous.

The purpose of the anhydrous medium is to carry the exothermic heating agent without activating it prior to exposure to water.

The term "anhydrous" as used herein refers to compositions containing 5% by weight or less of water based on the total weight of the composition.

In one embodiment, the composition has 3% or less water. In one embodiment, the composition has 1% or less water.

The term "anhydrous" as used herein means that no water is added to the composition and that the water is contained only in the form of structured water, which in some cases is unavoidable and is introduced in minute amounts as part of the ingredients.

Thus according to one preferred embodiment, the present invention relates to a solid composition for caring for keratin materials, comprising, by weight relative to the total weight of the composition:

a) less than or equal to 5 wt% water;

b) 40 to 60% by weight of PEG-8;

c) 2 to 10% by weight of at least one solid fatty alcohol selected from cetyl alcohol, stearyl alcohol or mixtures thereof; and

d) from 2% to 10% by weight of at least one anionic surfactant selected from sodium lauroyl glutamate, potassium cocoyl glycinate or mixtures thereof.

Solidity

According to the invention, the composition is a solid composition. Preferably, the composition of the present invention is a solid composition that can be molded into a paste (palm) or stick.

Warming effect

The compositions of the present invention provide a perceived warming effect when applied to keratin materials, such as skin.

In one embodiment, the composition of the present invention is configured to provide a minimum temperature rise of at least 1.5 ℃ by warming upon exposure to water and mixing energy. For example, in one embodiment, manual activation of a composition according to the present invention results in a temperature increase of about 2-3 ℃. Using Clarisonic^®The same composition generates a temperature rise of about 2-4 c at the brush head.

In one embodiment, the composition is configured to warm for at least 40 seconds upon exposure to water and manual mixing energy. Such a time frame is achieved in the following examples and is necessary to provide a lasting effect to the user.

In addition, activation of the composition with the brushhead results in a shorter duration before peak warmth is reached than manual activation. While the duration of warming may be maintained for a similar amount of time, the user feels heat faster and more intense when activated with the brushhead.

Additional polyol

According to one embodiment of the invention, the composition further comprises at least one C-containing polymer different from the polyethylene glycol as described above₂-C₈A polyol having a carbon chain.

Non-limiting examples of polyols other than propylene glycol as described above are glycerol, propylene glycol, dipropylene glycol, butylene glycol, hexylene glycol, or mixtures thereof. More preferably, the polyols suitable for use in the present invention are selected from glycerol, propylene glycol or mixtures thereof.

According to a preferred embodiment, the additional polyol, when present, is present in an amount ranging from 0.1% to 50% by weight, preferably from 10% to 40% by weight, relative to the total weight of the composition.

Optionally, according to a particular preferred embodiment, the present invention relates to a solid composition for cleansing and/or removing makeup from keratin materials, in particular the skin, comprising, by weight relative to the total weight of the composition:

a) less than or equal to 5 wt% water;

b) 40 to 60% by weight of PEG-8;

c) 2 to 10% by weight of at least one solid fatty alcohol selected from cetyl alcohol, stearyl alcohol or mixtures thereof;

d) 2 to 10% by weight of at least one anionic surfactant selected from sodium lauroyl glutamate, potassium cocoyl glycinate or mixtures thereof; and

e) 10 to 40% by weight of glycerol.

Application method

In another aspect, there is provided a cleaning method comprising applying the composition of the invention as disclosed herein.

In some embodiments, the composition is used for cleansing, such as cleansing the skin. The composition is delivered to the area to be cleaned, such as a portion of the skin. Water may then also be applied. In other embodiments, manual energy is applied to a mixture of water and a composition of the invention (e.g., rubbing, scrubbing, massaging, washing, buffing (abrading), etc., against the skin).

In one embodiment, a mixture of water and the composition is delivered to the skin.

In one embodiment, cleansing the skin portion further comprises exfoliating the skin.

In one embodiment, cleansing the portion of skin further comprises removing color cosmetic from the skin.

The following examples are intended to illustrate, but not limit, embodiments of the disclosure.

As used herein, all percentages are by weight (wt.%) of the total composition.

All numerical ranges include narrower ranges; the upper and lower limits of the ranges specified may be interchanged to establish additional ranges not expressly specified. All ranges and values disclosed herein are inclusive and combinable. For example, any value or point described herein that falls within a range described herein can serve as a minimum or maximum value to derive a subrange, and so forth.

The terms "comprising," "having," and "including" as used herein are used in their open, non-limiting sense.

The terms "a" and "an" and "the" are to be understood as including the plural as well as the singular.

The phrase "at least one" means "one or more" (and vice versa) and thus includes individual components as well as mixtures/combinations.

All publications and patent applications cited in this specification are herein incorporated by reference for any and all purposes as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. In the event of a discrepancy between the present disclosure and any publication or patent application incorporated by reference herein, the present disclosure controls.

The foregoing description illustrates and describes the present disclosure. Additionally, the disclosure shows and describes only exemplary embodiments, but as mentioned above, it is to be understood that it is capable of use in various other combinations, modifications, and environments and is capable of changes or modifications within the scope of the disclosed concept as expressed herein, commensurate with the above teachings and/or the skill or knowledge of the relevant art. The embodiments described hereinabove are further intended to explain best modes known to the applicant and to enable others skilled in the art to utilize the disclosure in such, or other, embodiments and with the various modifications required by their particular applications or uses. Accordingly, the description is not intended to limit the invention to the form disclosed herein. It is also intended that the appended claims be construed to include alternative embodiments.

Examples

The following examples are provided for illustration only and are not intended to be limiting.

In each of the following examples, the amounts of the components given are in terms of Active Material (AM).

TABLE 1 compositions of inventive and comparative formulations

。

Comparative formulation 1' does not contain polyethylene glycol as claimed herein; comparative formulation 1 "does not contain solid fatty alcohols as claimed in the present invention.

Procedure for preparing the formulations of the invention:

First, the ingredients in the above table were mixed and homogenized at 80 ℃ until all ingredients were completely dissolved.

Then, the mixture obtained above was cooled to room temperature in an ice bath at a stirring speed of 200 rpm.

Comparative formulation 1' contained no PEG-8; comparative formulation 1 "does not contain solid fatty alcohol as claimed.

The various properties of the above-mentioned formulations were evaluated.

Warming effect of the formulation

The warming effect of PEG-8, propylene glycol and glycerol was measured. 2 grams of each of the above ingredients were placed on a silicone substrate and 2 ml of room temperature (20 ℃) water was added to the formulation using a syringe. A thermocouple (Jinko Handheld meters jk802, China) was then placed on the silicone substrate to record the temperature. The formulation and water were mixed using a brush head at a force of 100-200g, 2 rev/sec for 1 minute. The results are shown in FIG. 1.

Solidity, conversion properties and cosmetic properties during application

The solidity, conversion properties and cosmetic properties of the formulations such as lathering and skin feel were evaluated by a panel of 10 consumers using the above formulations as skin cleansing products on the forearms separately and a score was assigned to each formulation. The procedure was as follows:

0.5 g of the above-mentioned formulation was placed in the palm of a hand, respectively;

mix the formulation with 1 gram of water with a pipette;

rub between palms for 15 seconds (4 cycles per second);

gathering foam in the palm to prevent dripping;

evaluating the volume and density of the resulting foam;

the foam was rinsed off with water and skin feel was evaluated.

A score of 5: at least 80% of consumers deem to be good and expected;

a score of 4: 60% to 80% (excluding 80%) of the consumers considered good and expected;

a score of 3: at least 50% of the consumers believe the effect is good and in line with expectations;

score 2 > 60% of consumers considered poor and unacceptable;

a score of 1: more than 80% of consumers deems the effect poor and unacceptable.

The results are as follows:

。

from the above results, it is shown that the formulations 1 to 3 of the present invention are stable over time and exhibit a unique use experience due to the transformations that occur during application; in addition, they all have good lather and skin feel. On the other hand, comparative formulation 1' is unstable and therefore unacceptable, comparative formulation 1 ″ is a liquid composition which does not exhibit a unique use experience, i.e. is not transformed.

Regarding the warming effect, according to the results shown in fig. 1, the mixture with water shows excellent warming effect when PEG-8 is present, increasing the temperature more than 2 ℃ for more than 60 seconds. It is evident that formulations 1 to 3 of the present invention have a good thermogenic effect due to PEG-8.