JP2011162463A - Concealer for irregularity - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concealer for skin irregularities. <P>SOLUTION: The concealer for irregularities contains: 8.9-11 mass% wax (a), provided that 30-45 mass% rice bran wax are present in the wax; 25-35 mass% volatile oily ingredient (b), 18-25 mass% nonvolatile oily ingredient (c); and 0-1 mass% color pigment (d). Preferably, the wax (a) further includes 29-40 mass% paraffin wax. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an unevenness correcting concealer, and more particularly to an improvement in the unevenness correcting effect.

Conventionally, cosmetics for making the unevenness of the skin such as pores, wrinkles or roughness of the skin inconspicuous have been desired, and various studies have been made.
For example, Patent Document 1 describes an oily cosmetic for concealing concavities and convexities containing spherical polymethacrylic acid alkyl ester powder and volatile silicone oil.
Patent Document 2 discloses a cosmetic for correcting irregularities containing a hydrocarbon wax having a specific composition, fumed silica, and silicone elastomer powder.

However, even conventional cosmetics for correcting irregularities are not sufficiently satisfactory, and further improvements have been desired. In particular, an oily cosmetic called a concealer that is applied before the foundation is desired to contain almost no color pigment so as not to affect the color rendering effect of the foundation that is applied later.
On the other hand, Patent Document 3 describes an oil-based solid cosmetic containing rice bran wax. However, Patent Document 3 does not discuss the unevenness correction effect at all.

JP 2002-265333 A JP 2009-184980 A JP 2009-179564 A

  The present invention has been made in view of the above-described background art, and an object thereof is to provide a concealer that is excellent in skin unevenness correction effect.

  As a result of intensive studies by the present inventors, when an oily cosmetic composition having a specific composition containing rice bran wax is applied to the skin, the coating film is rounded, and the glass plays a role like a thin veil, causing the skin to feel uneven. As a result, the present invention has been completed.

That is, the present invention provides an unevenness correcting concealer characterized in that the composition contains the following components (a) to (d):
(A) Wax is 8.9 to 11% by mass, provided that 30 to 45% by mass of rice bran wax in the wax;
(B) 25 to 35% by mass of volatile oil;
(C) 18-25 mass% of non-volatile oil content; and (d) 0-1 mass% of color pigments.
The present invention also provides the unevenness correcting concealer, wherein (a) the wax further contains 29 to 40% by mass of paraffin wax.

The present invention also provides the unevenness correcting concealer according to any one of the above, which is a solid cosmetic.
Moreover, this invention provides the said concealer for uneven | corrugated correction | amendment characterized by being stick shape with a diameter of 8.0-9.5 mm.
Moreover, this invention provides the concealer for uneven | corrugated correction | amendment in any one of the said characterized by apply | coating with a sponge chip | tip.

  According to the present invention, a concealer having a very high unevenness correction effect (foggy effect) can be obtained. Moreover, the adhesiveness and applicability are also excellent. Moreover, even when it is made into a stick shape, it exhibits high impact resistance and can be made into a thin stick shape.

It is the figure which compared the foggy effect about the concealer from which a wax composition differs. It is the figure which compared the foggy effect about the concealer from which a wax composition differs.

The concealer of the present invention is an oily cosmetic that is used to make the unevenness of the skin inconspicuous and is applied to the skin before making up with a foundation or the like.
When the concealer of the present invention is applied to the skin, the coating film acts like a glass or a thin veil, and the unevenness of the skin is softly blurred, resulting in a smooth finish with no glossiness (shine) . In the present invention, such an effect is referred to as a “foggy effect”. The foggy effect of the present invention is not lost even when a makeup cosmetic such as a foundation or a funny one is applied from above, and a good finish free from dust is obtained.
The concealer of the present invention includes the following components (a) to (d).

(A) Wax In the concealer of the present invention, the wax is contained in an amount of 8.9 to 11% by mass. If the amount of wax is too small, a sufficient foggy effect cannot be obtained. In addition, when it is desired to use a concealer as a solid cosmetic such as a stick, formulation may be difficult. On the other hand, when there is too much wax, it becomes inferior in applicability, such as being difficult to spread on the skin.

  In the present invention, rice bran wax is contained in the wax in an amount of 30 to 45% by mass, preferably 30 to 40% by mass. Rice bran is a main component that provides the foggy effect of the present invention. If there is too little rice bran wax, the foggy effect cannot be obtained. On the other hand, when it is too much, the skin contact may become hard, it may be difficult to spread on the skin, the applicability may be lowered, or the adhesion to the skin may be inferior. Further, when the concealer is in a stick shape, particularly a thin stick shape, the impact resistance may be insufficient, such as being broken by application or dropping.

  The rice bran wax used in the present invention can be obtained by purifying a dewax obtained by extracting from rice bran. Depending on the degree of purification, the color varies from yellow to white, and the acid value and iodine value differ, but rice bran wax having an iodine value and acid value of 3.0 or less is preferred. As a commercial item, "Rice wax TOWAX-3P3" (Toa Kasei Co., Ltd.) is mentioned, for example.

  The wax contains a wax other than rice bran wax. As such a wax, one or more kinds usually used for cosmetics and skin external preparations can be used. Examples thereof include microcrystalline wax, paraffin wax, Fischer-Tropsch wax, polyethylene wax, candelilla wax, carnauba wax, beeswax, molasses, ozokerite, ceresin, hardened animal oil, hardened vegetable oil and the like.

  Paraffin wax can increase the impact resistance of the concealer of the present invention. The paraffin wax is preferably 29 to 40% by mass in the wax. If the amount is too small, the effect of paraffin wax is not sufficiently exhibited. On the other hand, even if blended excessively, an effect commensurate with it cannot be obtained, and blending of other wax components may be restricted, and adhesion may be affected.

(B) Volatile oil content In the concealer of the present invention, the volatile oil content is 25 to 35 mass%. When there is too little volatile oil content, the applicability | paintability to skin will worsen, and when too much, the mixing | blending of another component will be restrict | limited relatively and the foggy effect may become inadequate.
As the volatile oil, one or more kinds which are usually used in cosmetics and skin external preparations can be used. For example, isoparaffin hydrocarbon oils (for example, isododecane) having a low boiling point (boiling point of 260 ° C. or less at normal pressure), silicone oils (for example, cyclic dimethylpolysiloxane having 4 to 6 Si, chain dimethyl having 2 to 5 Si) Polysiloxane).

(C) Nonvolatile oil content In the concealer of the present invention, the nonvolatile oil content is contained in an amount of 18 to 25% by mass. If the non-volatile oil content is too small, the coating film lacks flexibility and the feeling of use may be inferior. If it is too large, the coating film may become lustrous and the foggy effect may be impaired.

As the non-volatile oil, one or more kinds which are usually used in cosmetics and skin external preparations can be used. Examples thereof include hydrocarbons, ester oils, vegetable oils, animal oils, higher alcohols, higher fatty acids and the like.
Examples of the hydrocarbon include liquid paraffin, paraffin, squalane, squalene, pristane, petrolatum and the like.

  Ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethyloctanoate, cetyl lactate, myristyl lactate, Lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di2-ethylhexanoate, dipentaerythritol fatty acid ester, monoisostearic acid N-alkyl glycol, dicapric acid neopentyl glycol, malic acid diacid Isostearyl, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, triisostearate Methylolpropane, glyceryl trioctanoate, glyceryl triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, glycerin tri-2-ethylhexanoate, 2-ethylhexyl palmitate Glyceryl trimyristate, glyceride tri-2-heptylundecanoate, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylundecyl palmitate, diisobutyl adipate, N-lauroyl-L-glutamate-2-octyl Dodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, palmiti 2-hexyl decyl adipate, di 2-hexyl-decyl, diisopropyl sebacate, and triethyl citrate.

Vegetable oils include avocado oil, camellia oil, macadamia nut oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, peanut oil, almond oil, soybean oil, tea seed oil, jojoba oil, germ oil, etc. .
Animal oils include turtle oil, egg yolk oil, mink oil and the like.

  Examples of higher alcohols include oleyl alcohol, isostearyl alcohol, octyldodecanol, decyltetradecanol, jojoba alcohol, cetyl alcohol, and myristyl alcohol, and examples of higher fatty acids include oleic acid, isostearic acid, linoleic acid, linolenic acid, and ethanol. Examples include icosapentaenoic acid, docosahexaenoic acid, palmitic acid, and stearic acid.

(D) Colored pigment When a colored pigment (non-white pigment) is blended in the concealer of the present invention, the content must be 1% by mass or less in the composition. When the amount of the color pigment increases, the foggy effect of the present invention cannot be felt.

  Examples of such coloring pigments include one or more kinds that are usually used as coloring materials in cosmetics and external preparations for skin. For example, inorganic red pigments such as iron oxide (Bengara) and iron titanate, inorganic brown pigments such as γ-iron oxide; inorganic yellow pigments such as yellow iron oxide and loess, black iron oxide, carbon, low-order oxidation Inorganic black pigments such as titanium, inorganic purple pigments such as mango violet and cobalt violet, inorganic green pigments such as chromium oxide, chromium hydroxide and cobalt titanate, inorganic blue pigments such as ultramarine and bitumen, titanium oxide coating Mica, titanium oxide coated bismuth oxychloride, titanium oxide coated talc, colored titanium oxide coated mica, pearl pigment such as fish scale foil, metal powder pigment such as aluminum powder, copper powder, red 202, red 205, Red 220, Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, Blue 404 Organic pigments such as Red No. 3, Red No. 104, Red No. 227, Red No. 401, Orange No. 205, Yellow No. 4, Yellow No. 202, Green No. 3, Blue No. 1 etc., such as zirconium, barium, aluminum lake, etc. Examples include natural pigments such as organic pigments, chlorophyll, and β-carotene.

In the present invention, powders other than the color pigment can be appropriately blended as necessary within the range not impairing the effects of the present invention. As such a powder, one or more kinds which can be usually blended in cosmetics and external preparations for skin can be used.
Examples of such powders include inorganic powders (for example, talc, kaolin, mica, sericite (sericite), muscovite, phlogopite, synthetic mica, saucite, biotite, permiculite, magnesium carbonate, calcium carbonate, Aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (baked gypsum), calcium phosphate, fluorine apatite, hydroxyapatite, Ceramic powder, metal soap (eg zinc myristate, calcium palmitate, aluminum stearate), boron nitride, etc .; organic powder (eg polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, police Ren powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); inorganic white pigments (e.g., titanium dioxide, zinc oxide, etc.) and the like. The powder that has been surface-treated (hydrophobized, hydrophilized, water-repellent, etc.) as necessary may be used.

  The blending amount of the powder is not particularly limited and is usually 0.1 to 45% by mass, but is preferably 10% by mass or more, and more preferably 20% by mass or more from the viewpoint of a smooth use feeling. Moreover, in this invention, it is set as the concealer which does not have powderiness even if it mix | blends highly with 25 mass% or more and also 35 mass% or more in a concealer, and is excellent also in adhesiveness, applicability | paintability, etc. it can.

Other Components In the present invention, in addition to the above components, components that can be usually blended in cosmetics and external preparations for skin can be blended within a range not impairing the effects of the present invention.
Examples include surfactants, ultraviolet absorbers, thickeners, antioxidants, preservatives, fragrances, vitamin drugs, and the like.

  Moreover, a well-known uneven | corrugated correction | amendment component can also be used together if it is a range which does not impair the effect of this invention. Among such components, an example of a preferable component is spherical polymethacrylic acid alkyl ester powder.

The spherical polymethacrylic acid alkyl ester powder is a polymer or crosslinked product of an alkyl ester of methacrylic acid, and examples of the alkyl ester include methyl ester and ethyl ester. Preferably, cross-linked spherical polymethyl methacrylate (Gantz Pearl GMX-0810 manufactured by Ganz Kasei Co., Ltd., Microsphere M-306 manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), and spherical polymethyl methacrylate (Microsphere M-100 manufactured by Matsumoto Yushi Seiyaku Co., Ltd.) are used. The average particle size is 3 to 18 μm. These spherical powders can be surface-treated products such as untreated products or hydrophobized products as necessary.
The compounding quantity of spherical polymethacrylic acid alkylester powder is normally 5-45 mass% in a concealer, Preferably it is 10-30 mass%.

Product Form Although the dosage form of the concealer of the present invention is not particularly limited, it is preferably provided as a solid cosmetic. The shape is not particularly limited, and it can be produced by an ordinary method such as filling and solidifying the heated and mixed raw material mixture in an intermediate dish or stick.

Stick-shaped cosmetics tend to bend when applied directly to the skin from the shape, when the cosmetic is applied to the applicator, or when dropped. In particular, stick-shaped cosmetics may be desired to have a diameter of 8.0 to 9.5 mm in terms of beauty, ease of use, and ease of holding. Is likely to occur. For this reason, the composition of the components is remarkably limited, and it has been very difficult to obtain a stick-like concealer having a desired effect and impact resistance, particularly a thin stick-like concealer.
According to the present invention, a stick-like concealer having excellent impact resistance can be obtained, and a concealer having high impact resistance that is not easily broken even when it is made into a thin stick shape can be obtained.

Method of Use The concealer of the present invention can be applied directly on the skin or by hand, but a higher foggy effect can be obtained by applying it to the skin with a sponge-like chip. This is presumably because the coating film by the concealer of the present invention has an appropriate surface hardness, and by applying with a sponge chip, very fine irregularities can be formed on the coating film surface. As the sponge-like chip, a wet-type urethane material that can obtain a finer sponge than an NBR material widely used in foundations and the like is suitable for the concealer of the present invention because it is relatively inexpensive. When the components (a) to (d) are out of the above ranges, it may not be possible to apply well with a sponge tip, or an improvement effect due to application with a sponge tip may not be obtained.

  Hereinafter, the present invention will be further described with specific examples, but the present invention is not limited thereto. The blending amounts are shown in mass% unless otherwise specified. Rice wax TOWAX-3P3 (Toa Kasei Co., Ltd.) was used as the rice bran. The test method is as follows.

[Use test]
A questionnaire was conducted by 10 female panels regarding the foggy effect, applicability and adhesion when applied to the skin by hand, and evaluated according to the following criteria.

(Foggy effect)
○: Eight or more panels with no shine / concave feeling and high foggy effect △: 5-7 persons with no shine / concave feeling and high foggy effect ×: No foggy / concave feeling with foggy effect Less than 5 high panels

(Applicability)
The ease of application to the skin was evaluated by a panel of 10 people.
○: Eight or more panels easy to apply Δ: Five to seven panels easy to apply ×: Five or less panels easy to apply

(Adhesion)
A panel of 10 people evaluated the adhesion to the skin when applied to the skin.
○: Eight or more panels with high adhesion Δ: Five to seven panels with high adhesion ×: Five or less panels with high adhesion

[Impact resistance test]
A sample obtained by filling and solidifying an ordinary pay-out type sticky cosmetic container was dropped from a height of 40 cm. An erect, inverted, or sideways drop was defined as one cycle, and a cycle that could not be broken after three cycles was regarded as acceptable.
Evaluation was performed as follows, based on the number of passes when n = 5.
○: The number of passing is 5 △: The number of passing is 4 ×: The number of passing is 3 or less

Test example 1

(Production method)
Each component of wax, volatile oil, non-volatile oil, surfactant, and antioxidant in Table 1 is uniformly heated and mixed at 90 ° C, and then spherical powder, powder, and coloring pigment are added and dispersed uniformly. A dispersion was obtained. After deaeration, the container was filled and cooled to produce an oily solid cosmetic.

  In the above basic formula A, the composition of the wax was changed in various ways, and the foggy effects were compared. As a result, as can be seen from FIGS. 1 and 2, a high foggy effect was obtained when rice bran contained rice bran wax. In addition, as in samples 1 to 6, no particular change in the foggy effect was observed even when the composition of the wax other than rice bran wax was changed. Therefore, rice bran is considered to be an important component for the foggy effect.

Table 2 shows the results obtained by examining the basic formulation A (wax 10% by mass) while changing the ratio of rice bran wax to other waxes. In Table 2, the composition of the wax other than rice bran wax is the same as that of sample 1 in FIG.
As can be seen from Table 2, the foggy effect became significant when the proportion of rice bran wax in the wax was 30% by mass or more. However, when the proportion of rice bran wax in the wax was too large, the area around the skin became hard and difficult to spread on the skin, and the adhesion to the skin also decreased.
For these reasons, it was considered that the ratio of rice bran wax in the wax was preferably 30 to 45% by mass.

Test example 2
Table 3 shows the results when the total amount of wax was changed in Sample 1-3. The increase or decrease of the total amount of wax was adjusted by the amount of volatile oil. The composition of the wax is Sample 1 in FIG. 1 (in the wax, about 33.5% by weight of rice bran wax, about 28.5% by weight of paraffin wax, about 16.7% by weight of polyethylene wax, about 7.8% by weight of microcrystalline wax, carnauba wax. About 13.5% by mass).
As can be seen from Table 3, if the amount of wax is too small, the foggy effect cannot be obtained, and if it is too large, the spread on the skin is poor and the coating property is difficult to spread.
Therefore, the concealer of the present invention preferably contains 8.9 to 11% by mass of wax.

Test example 3
Further, in the basic formulation, the amount of non-volatile oil, volatile oil, or coloring pigment was changed and examined.
As can be seen from Table 4 below, if the non-volatile oil content is too small, the coating film is hard and lacks flexibility, and if it is too much, the coating film will become shine and the foggy effect cannot be obtained (Samples 3-2 to 3-3). ).
Also, if the amount of volatile oil is too small, the coating property is inferior, such as making it feel heavy when applied, or worsening of stopping, and if it is too much, the remaining components after application will be relatively small, or the Foggy effect will be sufficiently obtained. Not possible (Samples 3-4 to 3-5).
Moreover, when there are too many color pigments, the foggy effect of this invention will not be felt (sample 3-6).
Therefore, in the concealer of the present invention, it is preferable that the volatile oil content is 25 to 35 mass%, the non-volatile oil content is 18 to 25 mass%, and the color pigment is 1 mass% or less.

Test example 4
Table 5 below shows the results of comparison of stick-shaped concealers with different diameters in the basic formulation A (wax 10% by mass). The proportion of rice bran wax in the wax was constant (35% by mass).
As can be seen from Table 5, when the proportion of paraffin wax decreases, the impact resistance may be insufficient when it is in the form of a thin stick. On the other hand, when there was too much paraffin wax, there existed a tendency for it to be inferior to adhesiveness.

  Therefore, in the case of a stick-like concealer, it is preferable to contain paraffin wax as a wax together with rice bran wax. In particular, in the case of a thin stick-like concealer, the paraffin wax is 29 to 40% by mass in the wax. It is preferable to contain.

Test Example 5
Table 6 below shows the results of comparing the unevenness correction effect when the sample a or sample 1 in FIG. 1 is applied to the skin by hand and when applied with a urethane sponge tip. The comparison was evaluated based on the number of panels that were more effective when applied with a sponge-like chip among the 10 female panels based on the effects when applied to each sample by hand.
○: Eight or more panels that are more effective when applied with sponge-shaped chips Δ: Six to seven panels that are more effective when applied with sponge-shaped chips ×: Sponge-shaped chips Less than 5 panels are more effective when applied with

  As shown in Table 6, there was almost no difference in the effect of the concealer of sample a that did not contain rice bran wax, but in the concealer of the present invention that contained rice bran wax, the effect became higher by applying with a sponge-like chip. It was.

Hereinafter, the formulation example of the concealer of this invention is illustrated.
Formula 1 Concealer wax (wax composition is the same as Sample 1) 10% by mass
Decamethylcyclopentasiloxane 28
Liquid paraffin 22
Methylphenylpolysiloxane 3
Sorbitan sesquiisostearate 1.2
Polymethylsilsesoxane 18
Silica / alumina coated titanium dioxide 7
Alumina-coated titanium dioxide 2.5
Sericite 8.02
Red iron oxide 0.06
Yellow iron oxide 0.2
Tocopherol 0.02

Claims (5)

Concave for correcting unevenness characterized by containing the following components (a) to (d) in the composition:
(A) Wax is 8.9 to 11% by mass, provided that 30 to 45% by mass of rice bran wax in the wax;
(B) 25 to 35% by mass of volatile oil;
(C) 18-25 mass% of non-volatile oil content; and (d) 0-1 mass% of color pigments.   The concealer for correcting irregularities according to claim 1, wherein the wax further contains 29 to 40% by mass of paraffin wax.   The concealer for correcting irregularities according to claim 1 or 2, wherein the concealer is a solid cosmetic.   4. The unevenness correcting concealer according to claim 3, wherein the concealer has a stick shape with a diameter of 8.0 to 9.5 mm.   The concealer for correcting irregularities according to any one of claims 1 to 4, wherein the concealer is applied with a sponge tip.

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