阅读说明：本技术 凹凸修补用外用剂 (External preparation for repairing unevenness ) 是由 齐藤由香里 池田智子 于 2019-10-10 设计创作，主要内容包括：本发明的目的在于,提供具有修补细小皱纹等凹凸的效果、并且涂布时容易涂布展开的凹凸修补用外用剂。本发明的凹凸修补用外用剂的特征在于,其含有(a)1～15质量％的蜡和(b)4～25质量％的非球状粉末,并且具有50000～150000mPa·s的粘度。(The purpose of the present invention is to provide an external preparation for repairing irregularities, which has an effect of repairing irregularities such as fine wrinkles and which can be easily spread when applied. The external preparation for repairing unevenness of the present invention is characterized by containing (a)1 to 15 mass% of wax and (b)4 to 25 mass% of non-spherical powder, and having a viscosity of 50000 to 150000 mPas.)

1. An external preparation for repairing irregularities, which comprises:

(a)1 to 15 mass% of wax,

(b)4 to 25 mass% of non-spherical powder,

and has a viscosity of 50000 to 150000 mPas.

2. The external preparation according to claim 1, wherein the amount of the non-spherical powder (b) blended with the wax (a) is 0.3 to 2.5.

3. The external preparation according to claim 1 or 2, further comprising (c) a crosslinking-type silicone elastomer.

4. The external preparation according to any one of claims 1 to 3, which further comprises (d) a spherical powder.

5. The external preparation according to any one of claims 1 to 4, which is a water-in-oil emulsion cosmetic or an oil cosmetic.

Technical Field

The present invention relates to a cosmetic for repairing unevenness, which exhibits an effect of repairing unevenness and has improved usability.

Background

Conventionally, cosmetics for making skin irregularities such as fine wrinkles, pores, or roughness have been desired and various studies have been made. As a cosmetic product providing such an unevenness repairing effect, it has been proposed to smooth unevenness on the skin so that the unevenness and the like become visually inconspicuous.

One of the raw materials used for such a cosmetic for repairing irregularities is wax, which has an excellent effect of repairing irregularities but is easily cured and is difficult to spread.

For example, patent document 1 discloses a concealer for repairing unevenness, which contains wax, a volatile oil component, a non-volatile oil component, and a coloring pigment. The external preparation can obtain high effect of repairing unevenness by adding rice bran wax to wax, and can obtain coating property to skin and flexibility of coating film by adding volatile oil and non-volatile oil.

However, an external preparation which further improves the durability and usability of the coating film while maintaining the effect of repairing irregularities is desired.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-

Disclosure of Invention

Problems to be solved by the invention

The purpose of the present invention is to provide an external preparation for repairing irregularities, which has an effect of repairing irregularities such as fine wrinkles and which can be easily spread when applied.

Means for solving the problems

The present inventors have made extensive studies to solve the above problems, and as a result, have found that an external preparation which can cover irregularities such as fine wrinkles and can be easily applied and developed can be obtained by combining a wax and a non-spherical powder, and have completed the present invention.

That is, the present invention provides an external preparation for repairing unevenness, which contains:

(a)1 to 15 mass% of wax,

(b)4 to 25 mass% of non-spherical powder,

and has a viscosity of 50000 to 150000 mPas.

ADVANTAGEOUS EFFECTS OF INVENTION

The present invention, by adopting the above-described configuration, can provide an external preparation for repairing irregularities, which can repair irregularities of the skin or the like and can be easily spread and applied even when wax is blended. The external preparation of the present invention can be applied in a sufficient film thickness without impairing the feeling of use. Therefore, unevenness such as fine wrinkles becomes inconspicuous immediately after coating, and the coated surface can obtain a full touch.

Detailed Description

The external preparation of the present invention is characterized by containing (a) a wax and (b) a non-spherical powder. The components constituting the external preparation of the present invention will be described in detail below.

< (a) wax

The wax (a) (hereinafter, may be simply referred to as "component (a)") to be blended in the external preparation of the present invention is not particularly limited as long as it is a wax generally used for external preparations, and is an oily component which is solid at ordinary temperature. Specific examples thereof include rice bran wax, candelilla wax, jojoba oil (hydrogenated jojoba oil), microcrystalline wax, paraffin wax, myristyl myristate, ceresin wax, and polyethylene wax.

(a) The amount of the component (B) is 1 to 15% by mass, preferably 2 to 10% by mass, based on the total amount of the external preparation. (a) When the amount of the component (b) is less than 1% by mass, a sufficient effect of repairing unevenness cannot be obtained, and when it exceeds 15% by mass, the external preparation becomes difficult to spread and the stability is lowered.

< (b) non-spherical powder

The non-spherical powder (hereinafter, may be abbreviated as "component (b)") to be blended in the external preparation of the present invention is not particularly limited as long as it is a powder generally used for external preparations and is non-spherical.

Among them, talc is preferably used in the present invention from the viewpoint of ease of coating. The talc may or may not be surface-treated. As the surface-hydrophobizing agent, those commonly used in the field of cosmetics, for example, silicones such as polydimethylsiloxane and alkyl-modified silicone, alkoxysilanes such as octyltriethoxysilane, dextrin fatty acid esters such as dextrin palmitate, fatty acids such as stearic acid, and silica can be used. The talc includes talc having various shapes such as a plate shape and a block shape, and among them, a block talc is preferably used. In the present invention, those having an average particle diameter of 5 to 25 μm are preferably used.

(b) The amount of the component (B) is 4 to 25% by mass, preferably 5 to 10% by mass, based on the total amount of the external preparation. (b) When the amount of the component (a) is less than 4% by mass, the external preparation becomes difficult to spread, and when it is blended in an amount exceeding 25% by mass, the external preparation becomes difficult to spread and gives a powdery feeling, which is not preferable.

Further, the amount of the non-spherical powder blended with the wax is 0.3 to 2.5, preferably 0.75 to 2.0.

The external preparation of the present invention has a viscosity of 50000 to 150000 mPas. The viscosity (mPas) referred to herein means: the prepared external preparation was allowed to stand at 30 ℃ for 1 day, and the obtained value was measured with a BH type viscometer (rotor No.7, 10 rpm, 1 minute). When the viscosity of the external preparation is less than 50000 mPas, the feeling of fit to the skin is poor, and the external preparation is not suitable for being overlaid on a makeup cosmetic, and when the viscosity exceeds 150000 mPas, the external preparation is difficult to spread and easily accumulated.

In addition to the above components, the external preparation of the present invention may contain, as necessary, components generally used in external compositions, such as oil-soluble film forming agents, surfactants, lower alcohols (e.g., ethanol), moisturizers, oil components, ultraviolet absorbers, ultraviolet scattering agents, powders, thickeners, antioxidants, preservatives, bactericides, pH adjusters, vitamins, blood circulation promoters, whitening agents, skin activators, active ingredients, extracts from animals and plants, pigments, and perfumes, in such ranges that do not impair the effects of the present invention. However, the present invention is not limited to these examples.

In particular, when a cross-linked silicone elastomer is blended in the external preparation of the present invention, the unevenness repairing effect and the ease of application can be further improved.

The crosslinkable silicone elastomer is a silicone elastomer (silicone elastomer) obtained by three-dimensionally crosslinking polydimethylsiloxane, and includes those having emulsifying properties and those having non-emulsifying properties, and is not particularly limited.

Examples of the emulsifying crosslinked silicone elastomer include a polyoxyethylene methylpolysiloxane crosslinked polymer, an alkyl group-containing polyoxyethylene methylpolysiloxane crosslinked polymer, a polyglycerin-modified silicone crosslinked polymer, and an alkyl group-containing polyglycerin-modified silicone crosslinked polymer, and examples of the non-emulsifying crosslinked silicone elastomer include a methylpolysiloxane crosslinked polymer, a methylphenylpolysiloxane crosslinked polymer, a vinyl dimethicone/lauryl dimethicone crosslinked polymer, a lauryl dimethicone ethyl dimethicone/bis-vinyl dimethicone crosslinked polymer, an alkyl (C30-45) cetearyl dimethicone crosslinked polymer, and a cetearyl dimethicone crosslinked polymer. The crosslinkable silicone elastomer may be sold as a swollen product swollen with various oil components such as silicone oil, mineral oil, glycerol tris (ethylhexanoate) and squalane.

Commercially available crosslinked silicone elastomers to be incorporated in the external preparation of the present invention include KSG-210 (a crosslinked product of (PEG-10/15)/polydimethylsiloxane), which is a mixture of polydimethylsiloxanes and 20 to 30% of the crosslinked product, available from shin-Etsu chemical Co., Ltd.), KSG-360Z (a crosslinked polymer of PEG-15/lauryl dimethiconoethyl polydimethylsiloxane, which is a mixture of polydimethylsiloxanes and 30 to 40% of the crosslinked product, available from shin-Etsu chemical Co., Ltd.), KSG-710 (a crosslinked product of dimethicone/polyglycerol-3), which is a mixture of polydimethylsiloxanes and 20 to 30% of the crosslinked product, available from shin-Etsu chemical Co., Ltd.), 9045 silicone elastomer mixture (a crosslinked product of polydimethylsiloxane polymer, available from shin-Etsu chemical Co., Ltd.), and KSG-210, A mixture of cyclopentasiloxanes and a crosslinked product of 12.6%, manufactured by dow corning dongli corporation).

When the external preparation of the present invention is blended with a cross-linked silicone elastomer, the blending amount thereof is 12% by mass or less, preferably 0.25 to 12% by mass, based on the total amount of the external preparation. When the amount is too small, the effect of improving the unevenness correction cannot be sufficiently obtained, and when it exceeds 12% by mass, the coating tends to be distorted and the effect tends to be impaired.

In the external preparation of the present invention, spherical powder is preferably blended from the viewpoint of improving the effect of repairing unevenness.

The spherical powder is usually a powder to be blended with an external preparation for improving usability, and is not particularly limited, and examples thereof include inorganic powders such as silicic anhydride, organic resin powders such as polymethyl methacrylate resin powder, polyamide resin powder (nylon powder), polyethylene powder, polystyrene powder, copolymer resin powder of styrene and (meth) acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, and trimethylsiloxane powder. Examples of commercially available products include TREFIL E-506S ((polydimethylsiloxane/vinyl polydimethylsiloxane) crosslinked polymer, manufactured by Dow Corning Toray), KSP-100 ((vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane) crosslinked polymer, manufactured by shin-Etsu chemical Co., Ltd.), Nylon SP-500 (Nylon-12, manufactured by Toray), Microsphere M306 (methyl methacrylate crosslinked polymer, manufactured by Songbu oil & fat pharmaceutical Co., Ltd.), and the like. In the present invention, it is preferable to use those having an average particle diameter of 2 to 30 μm.

When the spherical powder is incorporated into the external preparation of the present invention, the amount of the spherical powder is 25% by mass or less, preferably 3 to 25% by mass, based on the total amount of the external preparation. When the amount is too small, the effect of improving the unevenness correction cannot be sufficiently obtained, and when it exceeds 25% by mass, the powder feeling tends to be felt.

The dosage form of the external preparation of the present invention includes oil type, water-in-oil type such as cream, oil-in-water type emulsion type, and the like, and any dosage form can exhibit a desired masking effect of irregularities on the skin. Among them, the composition can be made into an oil-type or water-in-oil emulsion type to provide a more stable external preparation.

The external preparation of the present invention can be used as a base for various cosmetics, and can be prepared into skin care cosmetics, sunscreen cosmetics, foundation cosmetics, makeup cosmetics, and the like, which have a concave-convex repairing effect.

The external preparation of the present invention does not cause dusting even when applied to a foundation or the like, and therefore can be applied to the skin after application of a color cosmetic in a superposed manner, or can be applied directly to the skin without application of a color cosmetic as one of ordinary skin care.

The external preparation of the present invention can be produced by a conventionally used method. In short, when the external preparation of the present invention is prepared as a water-in-oil type emulsion cosmetic, it can be prepared as follows: the oil component and the aqueous component are separately heated and mixed as necessary to emulsify the aqueous phase in the oil phase, and the resulting emulsion is filled in a container and gradually cooled.

Examples

The present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. Unless otherwise specified, the amount to be blended is expressed in% by mass relative to the system in which the components are blended.

Before the examples, the evaluation method used in the present invention will be described.

1. Concave-convex repairing effect

Evaluation was performed by a practical use test of 10 professional panelists. Specifically, the effect (unevenness repairing effect) of applying each sample to the cheek to make unevenness such as pores and fine wrinkles visually inconspicuous on the skin after application was evaluated by the following evaluation criteria.

< evaluation Standard >

A: the evaluation of 8 or more bits was good

B: the evaluation of 5 to 7 bits was good

C: 3 to 4 bits of evaluation were good

D: evaluation on 2 bits or less was good

2. Ease of application

Evaluation was performed by a practical use test of 10 professional panelists. Specifically, each sample was applied to the cheek, and the spreadability during application was evaluated by the following evaluation criteria.

< evaluation Standard >

A: the evaluation of 8 or more bits was good

B: the evaluation of 5 to 7 bits was good

C: 3 to 4 bits of evaluation were good

D: evaluation on 2 bits or less was good

3. Stability of

The state of the preparation after being left at 50 ℃ for 2 weeks after the preparation was evaluated visually.

A: no separation of oil and water was observed, and the state immediately after the preparation was maintained.

B: separation of oil and moisture is slightly visible.

C: oil and moisture separation is clearly seen.

(examples and comparative examples)

1. Water-in-oil type emulsion cosmetic

Compositions of water-in-oil emulsion cosmetics shown in tables 1 to 3 below were prepared. Specifically, the powder is dispersed in the oily component mixed by the homomixer, and then the mixture is added to and mixed with the homogeneous aqueous component to obtain the composition.

[ Table 1]

As shown in table 1, the composition (example 1) containing the component (a) (rice bran wax) and the component (b) (talc) of the present invention has a sufficient effect of repairing unevenness and ease of application. In addition, the composition (example 2) in which the component (a) and the component (b) are blended with the crosslinkable silicone elastomer is further improved in the unevenness repairing effect and the ease of coating, compared with the composition of example 1.

On the other hand, the composition containing the crosslinkable silicone elastomer but not containing the component (a) (comparative example 1) did not provide a sufficient unevenness-repairing effect, the composition containing the component (b) in an amount of less than 4% by mass (comparative example 2) was not easily spread by coating, and the composition containing the component (b) in an amount of more than 25% by mass (comparative example 3) did not provide a sufficient unevenness-repairing effect and was also poor in spreading by coating.

[ Table 2]

As shown in table 2, compositions (examples 3 to 6) in which the kind of wax was changed from that of example 2 and compositions (examples 7 to 11) in which a plurality of kinds of waxes were mixed in a different combination were prepared, and when any of the waxes was used, the effects of repairing unevenness were sufficient, the coating was easy to be performed, and the stability was excellent.

[ Table 3]

In Table 3, compositions (examples 12) in which a cross-linking silicone elastomer and a spherical powder were blended in addition to the component (a) and the component (b) of the present invention, compositions (examples 13 to 16) in which the kind of wax was changed from that of the composition of example 12, and compositions (examples 17 to 21) in which a plurality of types of waxes were blended in different combinations were prepared. Any of the compositions has a sufficient effect of repairing unevenness, can be easily applied, and has excellent stability.

On the other hand, the composition (comparative example 4) containing the crosslinkable silicone elastomer and the spherical powder but not containing the component (a) and the composition (comparative example 5) containing the component (a) in an amount of less than 1% by mass did not provide a sufficient effect of repairing unevenness, and the composition (comparative example 6) containing the component (a) in an amount of more than 15% by mass had poor spreading during coating and poor stability. In addition, the composition (comparative example 7) in which the amount of the component (b) was less than 4% by mass had poor spread, and the composition (comparative example 8) in which the amount of the component (b) was more than 25% by mass had no sufficient effect of repairing irregularities and had poor spread. Further, even if the blending amount of zinc oxide having a light scattering effect in place of the component (b) is increased, a sufficient unevenness repairing effect is not obtained (comparative example 9).

2. Oily cosmetic

The compositions of the oily cosmetics shown in the following table 4 were prepared. Specifically, the powder is dispersed in the oily component mixed by the homomixer to obtain the composition.

[ Table 4]

As shown in table 4, a composition of an oil-based cosmetic composition containing the components (a) and (b) of the present invention was prepared (example 22). In addition, in the case of preparing compositions (examples 23 to 26) in which the kind of wax was changed from the composition of example 22 and compositions (examples 27 to 29) in which a plurality of kinds of waxes were blended by changing the combination method, although the coating easiness was inferior to that of the water-in-oil emulsion composition, both of the oil compositions obtained sufficient unevenness repairing effect and coating easiness and also had excellent stability.