Lip cosmetics

Abstract

To provide labial cosmetics that do not cause dryness after their application, and exhibit a high color migration inhibitory effect.SOLUTION: Labial cosmetics contain following components (A) and (B): (A) 5-30 mass% of non-hollow powder with an average particle size of 1 μm or more and 30 μm or less and an oil absorption capacity of 100-600 mL / 100 g, which is selected from silica and cellulose and (B) 70-95 mass% of dimethicone with a viscosity of 100-10000 cs at 25°C.SELECTED DRAWING: None

Description

Technical Field

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[0001] The present invention relates to lip cosmetics.

Background Art

[0002] Conventionally, in order to make the applied lipstick less likely to come off, suppress color transfer, and suppress bleeding, an overcoat agent that is applied on top of the applied lipstick has been studied. For example, Patent Document 1 describes that a lipstick bleeding prevention composition containing silicone oil, spherical cellulose having a particle size of 0.1 to 30 μm and / or spherical silica, and amorphous fine particle silica can be applied evenly, prevent bleeding of the lipstick, prevent color transfer of the lipstick, and improve the makeup retention. Further, Patent Document 2 describes that a lip cosmetic containing porous hollow silica, trimethylsiloxysilicate, and silicone oil enhances the gloss of the lipstick, suppresses bleeding of the lipstick, suppresses adhesion of the lipstick to dishes, etc., and has a good usability.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, since the surface area and oil absorption amount of the silica used in the conventional overcoat agent are large, there is a dry feeling after application. In addition, there is also a problem that the color transfer suppression effect is not sufficient, and color transfer is likely to occur under strong contact or rubbing, especially when using a non-woven mask.

Means for Solving the Problems

[0005] The inventors have discovered that by including a specific non-hollow powder and dimethicone, it is possible to obtain a lip cosmetic that does not cause a drying sensation after application, has a high color transfer suppression effect, a smooth feel, does not change the color of the lipstick after application, provides a glossy finish, and has excellent storage stability.

[0006] The present invention relates to the following components (A) and (B): (A) Non-hollow powder selected from silica and cellulose, with an average particle size of 1 μm to 30 μm, oil absorption capacity of 100 to 600 mL / 100 g, 5 to 30% by mass. (B) Dimethicone with a viscosity of 100-10000 cs at 25°C, 70-95% by mass This relates to lip cosmetics containing [a specific ingredient / product]. [Effects of the Invention]

[0007] The lip cosmetic of the present invention does not cause dryness after application, has a high color transfer suppression effect, suppresses color transfer to nonwoven masks and the like, and retains the lipstick color even after a long period of time. In addition, it has a smooth feel, does not change the color of the lipstick after application, provides a glossy finish, and has excellent storage stability. [Modes for carrying out the invention]

[0008] The component (A) used in this invention is a non-hollow powder with an average particle size of 1 μm to 30 μm and an oil absorption capacity of 100 to 600 mL / 100 g. Here, a hollow particle is a particle that has an air void inside, while a non-hollow particle is a particle that does not have such a void (a large space like a shell or capsule structure).

[0009] The average particle size of the powder of component (A) is 1 μm or more and 30 μm or less, but it is preferable that it is 2 μm or more from the viewpoint of feel, gloss after application, change in lipstick color, dryness, and suppression of color transfer. Furthermore, from the viewpoint of storage stability, it is preferable that it is 20 μm or less, and more preferable that it is 15 μm or less. In addition, the average particle size of component (A) is preferably 2 to 20 μm, and more preferably 2 to 15 μm. In this invention, the average particle size is measured using a laser diffraction scattering particle size distribution analyzer (for example, LA-920, manufactured by Horiba, Ltd.) with ethanol as the dispersion medium.

[0010] Furthermore, the oil absorption capacity of component (A) powder is 100-600 mL / 100 g, but from the viewpoint of usability, gloss after application, change in lipstick color, and suppression of color transfer, 120 mL / 100 g or more is preferred, and 140 mL / 100 g or more is more preferred. Furthermore, from the viewpoint of suppressing the feeling of dryness after application, 550 mL / 100 g or less is preferred, and 500 mL / 100 g or less is more preferred. Furthermore, the oil absorption capacity of component (A) is more preferably 120-550 mL / 100 g, and even more preferably 140-500 mL / 100 g. In this invention, the amount of oil absorbed is measured in accordance with the refined linseed oil method described in JIS K 5101.

[0011] Furthermore, when the powder of component (A) is mixed with dimethicone of component (B), from the viewpoint of suppressing changes in the lipstick color after application, it is preferable that the refractive index of component (A) be 1.3 to 1.7, more preferably 1.3 to 1.6, and even more preferably 1.35 to 1.55. In this invention, the refractive index is measured using an Abbe refractometer, and a refractive index of 589 nm is used.

[0012] The non-hollow powder of component (A) is selected from silica and cellulose, and silica is preferred from the viewpoint of excellent transparency when mixed with dimethicone. Furthermore, the non-hollow powder of component (A) preferably contains spherical powder from the viewpoint of suppressing color transfer. Moreover, from the viewpoint of improving storage stability, it is even more preferable to use spherical powder and plate-shaped powder in combination. Here, "spherical" includes perfect spheres, nearly spherical shapes, and ellipsoids, and may also refer to spherical powders with uneven surfaces.

[0013] Component (A) can be used alone or in combination of two or more types, and its content is 5 to 30% by mass of the total composition, but from the viewpoint of enhancing the color transfer suppression effect, it is preferably 7% by mass or more, more preferably 9% by mass or more, and from the viewpoint of usability, gloss after application, and change in lipstick color, it is preferably 25% by mass or less, and even more preferably 20% by mass or less. Furthermore, the content of component (A) is 5 to 30% by mass of the total composition, and from the same viewpoint, it is preferably 7 to 25% by mass, and more preferably 9 to 20% by mass.

[0014] The component (B) used in the present invention is dimethicone with a viscosity of 100 to 10000 cs at 25°C. From the viewpoint of enhancing the color transfer suppression effect, a viscosity of 130 cs or higher is preferred, and 150 cs or higher is more preferred. Furthermore, from the viewpoint of excellent color transfer suppression effect as component (A) moves to the lipstick surface after application, a viscosity of 5000 cs or less is preferred, and 2000 cs or less is more preferred. Also, from the same viewpoint, component (B) is preferably dimethicone with a viscosity of 130 to 5000 cs at 25°C, and more preferably dimethicone with a viscosity of 150 to 2000 cs.

[0015] Component (B) can be used alone or in combination of two or more, and its content is 70 to 95% by mass of the total composition, but from the viewpoint of usability, gloss after application, change in lipstick color, suppression of color transfer, and storage stability, 72 to 93% by mass is preferred, and 73 to 91% by mass is more preferred.

[0016] The lip cosmetic of the present invention, having the above-described composition, does not cause dryness after application, has a high color transfer suppression effect, suppresses color transfer to nonwoven masks and the like, and retains the lipstick color even after a long period of time. Furthermore, it has a smooth feel, does not change the color of the lipstick after application, provides a glossy finish, and improves storage stability. Although the reason why the lip cosmetic of the present invention exhibits the above effects is not clear, by applying it on the lipstick film coated with lipstick, the non-hollow powder of component (A) moves to the surface of the lipstick film, and the dimethicone of component (B) moves to the side opposite to the lipstick film. The non-hollow powder of component (A) that has moved to the surface of the lipstick film absorbs the oily components contained in the lipstick, thereby forming a kind of gel film on the surface of the lipstick film. It is considered that the component (B) that is incompatible with the oily components contained in the lipstick covers the whole, resulting in the effects of the present invention such as color transfer suppression and gloss improvement.

[0017] In addition, the lip cosmetic of the present invention has a high color transfer suppression effect. From the viewpoint of storage stability, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.05 or more, more preferably 0.07 or more, and even more preferably 0.09 or more. Also, from the viewpoints of no dry feeling after application, smooth usability, no change in the color of the lipstick due to application, and obtaining a glossy finish, it is preferably 0.4 or less, more preferably 0.3 or less, and even more preferably 0.25 or less. In the present invention, the mass ratio (A) / (B) of component (A) to component (B) is preferably 0.05 to 0.4, more preferably 0.07 to 0.3, and even more preferably 0.09 to 0.25.

[0018] Furthermore, the lip cosmetic of the present invention can contain oily components other than component (B) within a range where it does not separate from the dimethicone of component (B). From the viewpoints of usability, gloss after application, change in lipstick color, color transfer suppression, storage stability, and compatibility with dimethicone, its content is preferably 10% by mass or less in the total composition, more preferably 5% by mass or less, and even more preferably 3% by mass or less.

[0019] Also, from the viewpoint of not mixing with the lipstick when applied on the applied lipstick, the content of the surfactant is preferably 3% by mass or less in the total composition, more preferably 1% by mass or less, and even more preferably not substantially contained. Also, it is more preferable not to substantially blend.

[0020] Furthermore, from the perspective of further imparting a smooth usability when applied over the applied lipstick, it can contain a silicone elastomer. Such silicone elastomers are those commonly used in cosmetics. For example, (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / phenyl vinyl dimethicone) crosspolymer, (vinyl dimethicone / lauryl dimethicone) crosspolymer, (vinyl dimethicone / methicone silsesquioxane) crosspolymer, etc. can be mentioned. From the perspective of achieving both a smooth usability and no color transfer, the content of the silicone elastomer is preferably 0.01 to 5% by mass in the total composition, more preferably 0.02 to 1% by mass.

[0021] In addition, the lip cosmetic of the present invention can also contain a powder not contained in component (A) as long as the effects of the present invention are not impaired. Examples of powders other than component (A) include coloring pigments, pearlescent powders, extender pigments, and resin powders. Among these, from the perspective of not changing the color of the lipstick when applied over the applied lipstick, the content of the coloring pigment is preferably 1% by mass or less in the total composition, more preferably 0.5% by mass or less, still more preferably 0.1% by mass or less, and even more preferably substantially not contained.

[0022] In addition, in the lip cosmetic of the present invention, the content of fine particle silica or fine particle cellulose having an average particle diameter of less than 0.1 μm absorbs the oil agent of the lipstick as described above and component (A) forms a gel film. From the perspectives of usability, gloss after application, change in lipstick color, color transfer suppression, and storage stability, it is preferably 0.1% by mass or less in the total composition, more preferably 0.05% by mass or less, still more preferably 0.01% by mass or less, and even more preferably substantially not contained. Also, it is preferably not substantially blended. The average particle diameter is measured in the same manner as component (A).

[0023] In addition to the above-mentioned components, the present invention may contain, to the extent that it does not impair the effects of the present invention, components commonly used in cosmetics, such as lower alcohols, polyhydric alcohols, polymer compounds, ultraviolet absorbers, antioxidants, fragrances, disinfectants, antifouling agents, moisturizers, water, etc.

[0024] The lip cosmetic of the present invention can be manufactured by conventional methods. It is preferably in liquid or fluid paste form. It is also suitable as an overcoat agent (lip overcoat agent) to be applied over lipstick. [Examples]

[0025] Examples 1-9 and Comparative Examples 1-7 Lip cosmetics (lip overcoats) with the composition shown in Table 1 were manufactured, and their smooth feel, glossy finish, lack of change in lipstick color upon application, lack of dryness, effect in suppressing color transfer to masks, lipstick color retention after 3 hours, and storage stability were evaluated. The results are also shown in Table 1.

[0026] (Manufacturing method) All the components shown in Table 1 were homogeneously mixed in a disperser at 30°C, and then degassed. The mixture was then poured into a dipping container while heated to 80°C and cooled to obtain a lip overcoat.

[0027] (Evaluation method) Five expert panelists applied lipstick to their lips, then applied each lip overcoat on top, and conducted a sensory evaluation of each of the following items (1) to (6). The results are shown as the total score of the five expert panelists. A cosmetic applicator (tip) with a flattened applicator tip was used.

[0028] (1) Smooth feel: 4; It has a very smooth feel when used. 3; It has a smooth feel when used. 2; The texture is slightly smooth. 1. The texture is not smooth.

[0029] (2) Glossy finish: 4; It's very shiny. 3; It has a glossy finish. 2; It has a slight sheen. 1; It lacks shine.

[0030] (3) No change in lipstick color upon application: 4; Even after applying an overcoat, there is absolutely no change in the color of the lipstick. 3; Applying an overcoat agent results in almost no change in the lipstick color. 2. Applying an overcoat may slightly alter the color of the lipstick. 1. Applying an overcoat will change the color of the lipstick.

[0031] (4) Lack of dryness: 4. My lips don't feel dry at all. 3. My lips feel almost completely free of dryness. 2; My lips feel slightly dry. 1. My lips feel dry.

[0032] (5) Effect of suppressing color transfer to masks: A lip overcoat was applied, and a non-woven mask was worn 5 minutes after application. After 1 hour, the absence of color transfer to the inside of the mask was evaluated according to the following criteria. 4. No color transfer to the mask. 3. There is almost no color transfer to the mask. 2; There is some color transfer to the mask. 1. There is a lot of color transfer to the mask.

[0033] (6) Lipstick color retention after 3 hours: 4; The lipstick color remains. 3; The lipstick color is almost completely preserved. 2; Some lipstick color remains. 1; The lipstick color is gone.

[0034] (7) Storage stability: After each lip overcoat was left to stand at 50°C for one month, five expert panelists visually inspected its appearance to check for oil separation and evaluated it according to the following criteria. The results are shown as the total score from the five expert panelists. 4; No separation is observed at all. 3; Some separation is observed at the liquid surface. 2; Separation is observed at the liquid surface. 1; The whole thing is separated.

[0035] [Table 1]

Claims

1. The following components (A) and (B): (A) Non-hollow powder selected from silica and cellulose, with an average particle size of 1 μm to 30 μm, oil absorption capacity of 100 to 600 mL / 100 g, 5 to 30% by mass. (B) 70-95% by mass of dimethicone with a viscosity of 100-10000 cs at 25°C A lip cosmetic containing the following, wherein the content of fine silica or fine cellulose particles with an average particle diameter of less than 0.1 μm is 0.1% by mass or less in the total composition.

2. The lip cosmetic composition according to claim 1, wherein the mass ratio (A) / (B) of component (A) to component (B) is 0.05 or more and 0.4 or less.

3. The lip cosmetic composition according to claim 1 or 2, wherein the refractive index of component (A) is 1.3 to 1.

7.

4. The lip cosmetic composition according to any one of claims 1 to 3, wherein the content of oily components other than component (B) is 10% by mass or less in the total composition.

5. A lip cosmetic according to any one of claims 1 to 4, which is an overcoat agent.

6. A method for using a lip cosmetic, comprising applying the lip cosmetic according to any one of claims 1 to 4 over lipstick.

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