Water-in-oil emulsion lip cosmetic

Abstract

To provide water-in-oil emulsified labial cosmetics that stably contain a water-soluble dye, and can achieve superior use feel and lip staining.SOLUTION: Water-in-oil emulsified labial cosmetics contain (A) a water-soluble dye, (B) polyether-modified silicone, (C) volatile silicone oil, and (D) water, where the aqueous phase constitutes 65-90 mass% of the total amount of the cosmetics.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an oil-in-water type emulsified lip cosmetic.

Background Art

[0002] Many oil-based lip cosmetics have been developed to impart gloss and moisturizing feeling. There are few color variations of color materials such as oil-soluble dyes blended in the oil phase. Since water-soluble dyes have a rich color variation, emulsified cosmetics in which a water-soluble dye is blended in the aqueous phase have been proposed. When adopting the oil-in-water type, there are cases where the stability is low. On the other hand, when adopting the water-in-oil type, since the water-soluble dye is present in the inner aqueous phase, there is a tendency that dyeing on the lips is unlikely to occur.

[0003] Since it is preferable that the appearance of the lip cosmetic and the color after application match, it is preferable that it is a transparent base. In the case of the water-in-oil type, depending on the formulation, it may become cloudy, and a transparent base is required. As a water-in-oil type cosmetic, cosmetics in which polyether-modified silicone, a specific silicone oil, a solid humectant, etc. are blended and the transparency and usability are improved have been proposed (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0005] The present inventors have surprisingly found that by using a lip cosmetic having a specific amount of an aqueous phase and containing a combination of a volatile silicone and a polyether-modified silicone, a water-soluble dye can be stably blended and dyeing on the lips can be achieved. The present invention is based on these findings.

[0006] The present invention provides the following: [1] A water-in-oil emulsion lip cosmetic, (A) Water-soluble dye, (B) Polyether-modified silicone, (C) Volatile silicone oil, and (D)Water It includes, An oil-in-water emulsion lip cosmetic in which the aqueous phase constitutes 65-90% of the total amount of the cosmetic. [2](B) The cosmetic composition according to [1], wherein the polyether-modified silicone comprises a polyether-modified silicone with an HLB of 2 to 6.5. [3](B) Polyether-modified silicone, (B1) Formula (b1): [ka] [In the formula, A is a methyl group, a phenyl group, and formula: -C3H6O(C2H4O) p (C3H6O) q R' (In the formula, R' is a group selected from the group consisting of a hydrogen atom, an acyl group, and an alkyl group having 1 to 4 carbon atoms. p is an integer between 5 and 50. q is an integer between 5 and 50. The repeating units (C2H4O) and (C3H6O) may be arranged randomly or form blocks. A group selected from the group consisting of polyoxyalkylene groups represented by , R is either a methyl group or a phenyl group. m is an integer between 50 and 1000. n is an integer between 1 and 40. The repeating units (SiR2O) and (SiRAO) may be arranged randomly or form blocks. The polyether-modified silicone contains 40% by weight or more of polyoxyalkylene groups. Polyether-modified silicone represented by, (B2) Formula (b2): [ka] (In the formula, r is between 9 and 19. s is 2 or 3, t:u is between 1:5 and 1:10. x, y, and z represent the proportions of repeating units that make up the main chain. Each repeating unit may be randomly connected or may form a block. Polyether-modified silicone used A cosmetic composition according to [1] or [2], comprising the following: [4] The cosmetic composition according to [3], further comprising (B) polyether-modified silicone, which is different from (B1) and (B2), and further comprising (B3) polyether-modified silicone. [5] The cosmetic composition according to [3] or [4], wherein the amount of (B1) or (B2) is 0.5 to 10% by mass of the total amount of the cosmetic composition. [6] The viscosity of (C) volatile silicone oil measured at 25°C using an Ostwald capillary viscometer was 0.5 to 2.5 mm 2 A cosmetic product that is / s, as described in any of [1] to [5]. [7](E) A cosmetic composition according to any one of [1] to [5], further comprising a humectant. [8](A) A cosmetic composition according to any one of [1] to [7], wherein the amount of water-soluble dye blended is 0.01 to 1% by mass relative to the total amount of the cosmetic composition. [9](B) The cosmetic composition according to any one of [1] to [8], wherein the amount of polyether-modified silicone blended is 0.5 to 10% by mass relative to the total amount of the cosmetic composition.

[10] (C) The cosmetic composition according to any one of [1] to [9], wherein the amount of volatile silicone oil blended is 0.3 to 30% by mass relative to the total amount of the cosmetic composition.

[11] A cosmetic composition according to any one of [1] to

[10] , wherein the viscosity measured at 25°C using a type B rotational viscometer is 1,000 mPa·s or more.

[12] The cosmetic according to any one of [1] to

[11] , which is translucent to transparent.

[0007] According to the present invention, it is possible to provide an oil-in-water type emulsified lip cosmetic that can stably contain a water-soluble dye and achieve dyeing on the lips. Detailed description of the invention

[0008] The oil-in-water type emulsified lip cosmetic according to the present invention (hereinafter sometimes referred to as a cosmetic) comprises (A) a water-soluble dye, (B) a polyether-modified silicone, (C) a volatile silicone oil, and (D) water, and the aqueous phase is 65 to 90% by mass based on the total amount of the cosmetic.

[0009] (A) Water-soluble dye The cosmetic according to the present invention comprises (A) a water-soluble dye (hereinafter sometimes referred to as component (A). The same applies to other components). Component (A) is not particularly limited as long as it can be formulated in the cosmetic. Specifically, Acid Red No. 2, Acid Red No. 3, Acid Red No. 102, Acid Red No. 104-1, Acid Red No. 105-1, Acid Red No. 106, Tartrazine, Sunset Yellow FCF, Fast Green FCF, Brilliant Blue FCF, Indigo Carmine, Acid Red No. 227, Acid Red No. 230-1, Orange II, Tartrazine Yellow, Quinoline Yellow, Fast Green FCF, Brilliant Blue FCF, Brown HT, Acid Red No. 401, Acid Red No. 504, Orange II, Tartrazine Yellow, Quinoline Yellow, Fast Green FCF, Patent Blue V, Black PN, etc. can be mentioned. Also, natural acid dyes such as carminic acid and laccaic acid can also be used. Further, as basic dyes, Rhodamine B, Methylene Blue, Magenta, Auramine, Methyl Violet, Malachite Green, Bismarck Brown, Mauveine, etc. can be mentioned.

[0010] Component (A) can be formulated as one kind or two or more kinds. The blending amount of component (A) is preferably 0.01 to 1% by mass, more preferably 0.05 to 0.5% by mass based on the total amount of the cosmetic.

[0011] (B) Polyether-modified silicone The cosmetic composition according to the present invention comprises (B) a polyether-modified silicone. Component (B) has a silicone chain (siloxane chain) as the main chain and hydrophilic groups having polyether groups as side chains, and in particular, polyether-modified silicones in which polyoxyalkylene groups are introduced into the silicone skeleton, such as polyoxyethylene (POE) or polyoxypropylene (POP), are preferred.

[0012] (B) Component may consist of one or more types, preferably comprising a polyether-modified silicone having an HLB (Hydrophilic-Lypophilic Balance) of 2 to 6.5. In the present invention, the HLB is calculated using the Griffin method. Preferably, component (B) is (B1) Polyether-modified silicone represented by formula (b1), or (B2) Polyether-modified silicone represented by formula (b2) It comprises, and more preferably, component (B1).

[0013] (B1) Polyether-modified silicone Equation (b1) is expressed as follows: [ka] [In the formula, A is a methyl group, a phenyl group, and formula: -C3H6O(C2H4O) p (C3H6O) q R' (In the formula, R' is a group selected from the group consisting of a hydrogen atom, an acyl group, and an alkyl group having 1 to 4 carbon atoms. p is an integer between 5 and 50. q is an integer between 5 and 50. The repeating units (C2H4O) and (C3H6O) may be arranged randomly or form blocks. A group selected from the group consisting of polyoxyalkylene groups represented by , R is either a methyl group or a phenyl group. m is an integer between 50 and 1000. n is an integer between 1 and 40. The repeating units (SiR2O) and (SiRAO) may be arranged randomly or form blocks. The polyether-modified silicone contains 40% by weight or more of polyoxyalkylene groups. The molecular weight of such polyether-modified silicone is not necessarily limited, but it is preferable that the polyether-modified silicone has a mass-average molecular weight of 30,000 or more. (B1) Examples of components include PEG / PPG-19 / 19 dimethicone.

[0014] (B2) Polyether-modified silicone Equation (b2) is expressed as follows: [ka] (In the formula, r is between 9 and 19. s is 2 or 3, t:u is between 1:5 and 1:10. x, y, and z represent the proportions of repeating units that make up the main chain. Each repeating unit may be randomly connected or may form a block. The molecular weight of such polyether-modified silicone is not necessarily limited, but it is preferable that the polyether-modified silicone has a mass-average molecular weight of 10,000 or more. (B2) Examples of components include cetyl PEG / PPG-10 / 1 dimethicone.

[0015] (B3) Polyether-modified silicone Component (B) preferably further comprises a polyether-modified silicone (B3) that is different from (B1) and (B2). The HLB of component (B3) is preferably 2 to 5. Examples of component (B3) include, but are not limited to, poly(oxyethylene-oxypropylene)methylpolysiloxane copolymer, polyoxyethylene methylpolysiloxane copolymer, silicone chain branched methylpolysiloxane copolymer, alkyl chain branched polyoxyethylene methylpolysiloxane copolymer, alkyl chain / silicone chain branched polyoxyethylene methylpolysiloxane copolymer, crosslinked polyoxyethylene methylpolysiloxane, alkyl-containing crosslinked polyoxyethylene methylpolysiloxane, branched polyglycerin-modified silicone, crosslinked polyglycerin-modified silicone, alkyl-containing crosslinked polyglycerin-modified silicone, alkyl-branched polyglycerin-modified silicone, etc. Specifically, examples of component (B3) include PEG-9 polydimethylsiloxyethyl dimethicone, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, PEG-10 dimethicone, PEG-3 dimethicone, etc.

[0016] Preferably, component (B) comprises a combination of (B1) and (B3), or a combination of (B2) and (B3), more preferably a combination of (B1) and (B3), and even more preferably, component (B) is (B1) and (B3).

[0017] (B) The amount of component blended is preferably 0.5 to 10% by mass, more preferably 1 to 8% by mass, and even more preferably 2 to 5% by mass, relative to the total amount of the cosmetic. The amount of (B1) or (B2) blended is preferably 0.5 to 9.8% by mass, more preferably 0.8 to 5% by mass, and even more preferably 1.1 to 2.5% by mass, relative to the total amount of the cosmetic composition. The amount of (B3) blended is preferably 0.2 to 5% by mass, more preferably 0.5 to 3% by mass, and even more preferably 0.9 to 1.5% by mass, relative to the total amount of the cosmetic composition.

[0018] (C) Volatile silicone oil The cosmetic composition according to the present invention comprises (C) a volatile silicone oil. In the present invention, a volatile silicone oil refers to a silicone oil that volatilizes at room temperature (25°C) and normal pressure (1 atmosphere, 9.8 × 10⁴ Pa). The viscosity of component (C) is preferably 0.5 to 2.5 mm when measured at 25°C using an Ostwald capillary viscometer. 2 The interval is / s, and more preferably 0.5~1.8mm 2 It is / s.

[0019] (C) Component may include, for example, chain-like silicone oils such as dimethicone and trisiloxane, or cyclic silicone oils such as cyclomethicone, preferably chain-like silicone oils, and more preferably trisiloxane or dimethicone.

[0020] (C) Component may be included in a combination of one or more types. The amount of (C) component included is 0.3 to 30% by mass, more preferably 1 to 25% by mass, and even more preferably 5 to 15% by mass, relative to the total amount of the cosmetic.

[0021] (D)Water The cosmetic composition according to the present invention comprises (D) water. As the water, water used for cosmetics, quasi-drugs, etc., can be used, for example, purified water, ion-exchanged water, tap water, etc. The amount of water added is preferably 35 to 70% by mass, and more preferably 50 to 60% by mass, relative to the total amount of the cosmetic composition according to the present invention.

[0022] The cosmetic composition according to the present invention is composed of an aqueous phase and an oil phase. The aqueous phase mainly consists of water and contains various water-soluble components. The aqueous phase accounts for 65 to 90% by weight, preferably 70 to 90% by mass, and more preferably 80 to 90% by mass, of the total amount of the cosmetic composition. By including a large amount of the aqueous phase, the transparency of the cosmetic composition can be improved.

[0023] (E) Moisturizer The cosmetic composition according to the present invention may further contain (E) a humectant. Component (E) may be solid or liquid. In the present invention, a solid humectant refers to a humectant that is in the form of a powder, lump, or paste at room temperature (25°C) and normal pressure (atmospheric pressure). Examples of solid humectants include sugars such as sucrose, erythritol, trehalose, maltitol, and xylitol; polyethylene glycol with an average molecular weight of 1,000 to 15,000; amino acid derivatives such as glycine, alanine, serine, arginine, aspartic acid, glutamic acid, arginine hydrochloride, trimethylglycine, and glycylglycine; and betaine. Examples of liquid humectants include dipropylene glycol, glycerin, 1,3-butylene glycol (BG), and dipropylene glycol (DPG).

[0024] (E) Component may be blended as one or more types. The amount of component (E) blended is preferably 20 to 50% by mass, and more preferably 25 to 40% by mass.

[0025] (F) Silicone elastomer The cosmetic composition according to the present invention may further include (F) a silicone elastomer. (F) Component can be, for example, cross-linked silicone resin powders such as dimethicone crosspolymer, (dimethicone / phenylvinyl dimethicone) crosspolymer, (dimethicone / vinyl dimethicone / methicone) crosspolymer, (dimethicone / vinyl diphenyl dimethicone / silsesquioxane) crosspolymer, preferably (dimethicone / vinyl diphenyl dimethicone) crosspolymer.

[0026] (F) Component can be blended as one or more types. The amount of component (F) blended is preferably 0.1 to 5% by mass, and more preferably 1 to 3% by mass.

[0027] In addition to the above-mentioned components, the present invention includes ingredients commonly used in cosmetics and pharmaceuticals, such as antioxidants, oily components, preservatives, alcohols, oil-phase thickeners, aqueous-phase thickeners, powder components, colorants, fragrances, UV absorbers, pharmaceuticals, extracts, waxes, etc., and one or more of these can be blended as long as they achieve the effects of the present invention.

[0028] The cosmetic composition according to the present invention can be applied to liquid lipsticks such as lip gloss, solid lipsticks, lip serums, lip concealers, and the like. The cosmetic composition according to the present invention is preferably translucent to transparent, and more preferably transparent. By increasing the transparency, the appearance color of the cosmetic composition can be made closer to the color after application.

[0029] The viscosity of the cosmetic composition of the present invention is preferably 1,000 mPa·s or more, and more preferably 3,000 to 40,000 mPa·s, as measured at 25°C using a B-type rotational viscometer. The cosmetic composition of the present invention can be manufactured according to conventional methods. [Examples]

[0030] The present invention will be specifically described based on the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the amounts are expressed as mass % of the total amount.

[0031] [Examples 1-9 and Comparative Examples 1 and 2] The water-in-oil emulsion lip cosmetics of Examples 1-9 and Comparative Examples 1 and 2 were prepared using the formulations shown in Table 1. Comparative Example 2 was prepared as an oil-in-water emulsion lip cosmetic using the formulation shown in Table 1. The values ​​in the table represent mass percent. [Table 1] The viscosity values ​​in the table were measured at 25°C using an Ostwald capillary viscometer.

[0032] Stability evaluation The cosmetic formulations prepared above were filled into sample tubes, their appearance was visually observed, and their formulation stability was evaluated according to the following criteria. A: Even at high temperatures (50°C), there was no change in appearance, demonstrating excellent stability. B: At room temperature (25°C), there was no change in appearance, and it showed excellent stability. C: Slight aggregation and creaming were observed. D: Aggregation was observed throughout.

[0033] Evaluation of dyeing The cosmetic product prepared above was applied to the arm, and after 10 minutes, the applied area was wiped with tissue paper. The changes in the applied area were visually observed and evaluated according to the following criteria. A: The color of the applied cosmetic was still visible across the entire application area after wiping. B: The color of the cosmetic product applied to the area was still visible after wiping, but the color was slightly lighter. C: After wiping, the color of the cosmetic applied to the treated area was observed, but the color was faint. D: The color of the cosmetic applied to the treated area could not be confirmed after wiping.

[0034] Transparency evaluation The appearance and color of the cosmetic products prepared as described above were visually observed and evaluated according to the following criteria. A: It was transparent. B: It was almost transparent, but slightly hazy. C: It was semi-transparent. D: It was unclear.

Claims

1. A water-in-oil emulsion lip cosmetic, (A) water-soluble dye; (B1) Formula (b1): 【Chemistry 1】 [In the formula, A is a methyl group, a phenyl group, and formula: -C 3 H 6 O(C 2 H 4 O) p (C 3 H 6 O) q R' (In the formula, R' is a group selected from the group consisting of a hydrogen atom, an acyl group, and an alkyl group having 1 to 4 carbon atoms. p is an integer between 5 and 50. q is an integer between 5 and 50. The repeating units (C₂H₄O) and (C₃H₆O) may be arranged randomly or form blocks. A group selected from the group consisting of polyoxyalkylene groups represented by , R is a methyl group or a phenyl group. m is an integer between 50 and 1000. n is an integer between 1 and 40. The repeating units (SiR₂O) and (SiRAO) may be arranged randomly or form blocks. The polyether-modified silicone contains 40% by weight or more of polyoxyalkylene groups. Polyether-modified silicone represented by (C) Volatile silicone oil, and (D) Water It includes, The aqueous phase constitutes 65-90% by mass of the total amount of cosmetic product. A water-in-oil emulsion lip cosmetic in which the amount of (B1) is blended is 1.1 to 2.5% by mass of the total amount of the cosmetic.

2. (B1) of HLB 2 to 6.5 A cosmetic composition according to claim 1, comprising:

3. (B1) and (B2) Formula (b2): 【Chemistry 2】 (In the formula, r is between 9 and 19. s is 2 or 3, t:u is between 1:5 and 1:

10. x, y, and z represent the proportions of repeating units that make up the main chain. Each repeating unit may be randomly connected or may form a block. The cosmetic composition according to claim 1, further comprising (B3) polyether-modified silicone, which is different from the polyether-modified silicone represented by (B3).

4. (C) The viscosity of the volatile silicone oil measured at 25°C using an Ostwald capillary viscometer was 0.5 to 2.5 mm. ２ A cosmetic composition according to claim 1 or 2, wherein the ratio is / s.

5. (E) The cosmetic composition according to claim 1 or 2, further comprising a moisturizer.

6. (A) The cosmetic composition according to claim 1 or 2, wherein the amount of water-soluble dye blended is 0.01 to 1% by mass relative to the total amount of the cosmetic composition.

7. (C) The cosmetic composition according to claim 1 or 2, wherein the amount of volatile silicone oil blended is 0.3 to 30% by mass relative to the total amount of the cosmetic composition.

8. The cosmetic composition according to claim 1 or 2, wherein the viscosity measured at 25°C using a type B rotational viscometer is 1,000 mPa·s or more.

9. The cosmetic composition according to claim 1 or 2, which is translucent to transparent.

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