Oil-in-water emulsion makeup cosmetic

Abstract

To provide an oil-in-water emulsion makeup cosmetic which is stable over time and offers a smooth and spreadable application feel, while exhibiting superior luster and superior persistence of the makeup film.SOLUTION: An oil-in-water emulsion makeup cosmetic comprises component (A) and component (B). Component (A) is a copolymer of vinylpyrrolidone and a C18-C30 alkene in an amount of 0.1 to 0.5 wt.%. Component (B) is xanthan gum in an amount of 0.1 to 0.5 wt.%.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an oil-in-water type emulsified makeup cosmetic containing 0.1 to 0.5% by weight of a copolymer of component (A) vinylpyrrolidone and C18-C30 alkene and 0.1 to 0.5% by weight of component (B) xanthan gum. More specifically, it relates to an oil-in-water type emulsified makeup cosmetic that is stable over time, has a smooth spreadability when applied, has an excellent gloss, and has excellent durability of the makeup film.

Background Art

[0002] Makeup cosmetics are used to give an attractive impression by adding color and shading. It is important that a makeup film that spreads smoothly when applied and has a uniform and excellent gloss is formed.

[0003] Especially, since the eyes blink, they move more frequently than other parts of the cheeks and face, and also come into contact with sweat and tears. Therefore, eye makeup cosmetics are also required to have excellent durability of the makeup film. For this reason, as the dosage form of eye makeup cosmetics, solid powder cosmetics or oily cosmetics are often selected. However, solid powder cosmetics may adsorb sebum and cause the eyelids to dry and wrinkles to become prominent, while oily cosmetics do not dry like solid powder cosmetics, but have a problem of poor usability due to stickiness peculiar to non-volatile oils.

[0004] In addition, due to the Westernization of lifestyles, the opportunity to expose the décolletage by wearing dresses, tank tops, camisoles, etc. has increased. The décolletage is a general term for the area from the neck muscles to around the shoulders and up to the upper chest. The body has a higher sweating rate than the face and requires durability of the makeup film. However, there are many powder cosmetics for makeup on the décolletage, and stains caused by transfer to clothes have been a problem.

[0005] Oil-in-water type and water-based cosmetics that can solve these problems have the advantage of being easy to wash, but on the other hand, they have the disadvantage of lower durability of the makeup film compared to water-in-oil type and oil-based cosmetics. To overcome the disadvantages, water-in-oil type makeup cosmetics with water resistance and sebum resistance formulated with a water-dispersible silicone resin and a fluorine-based resin (Patent Document 1), and water-in-oil type makeup cosmetics with good makeup retention by formulating gellan gum, phospholipids, cholesterol and / or phytosterol, and plate-shaped powder (Patent Document 2) have been prepared for improvement. However, there are disadvantages such as insufficient usability and glossiness. Therefore, there is a demand for an oil-in-water type emulsified makeup cosmetic that is stable over time, has a smooth and spreading usability, is excellent in glossiness, and has high durability of the makeup film.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] The problem of the present invention is to produce an oil-in-water type emulsified makeup cosmetic that is stable over time, has a smooth and spreading usability, is excellent in glossiness, and has high durability of the makeup film.

Means for Solving the Problems

[0008] As a result of intensive studies to solve the above problems, the present inventors have found that in an oil-in-water emulsion makeup cosmetic, by containing 0.1 to 0.5% by weight of a copolymer of component (A) vinyl pyrrolidone and C18-C30 alkene and 0.1 to 0.5% by weight of component (B) xanthan gum in the cosmetic base material, an oil-in-water emulsion makeup cosmetic having a smooth and spreading feel during use, high durability of the makeup film, and particularly excellent glossiness can be obtained, and thus the present invention has been completed.

Effects of the Invention

[0009] The oil-in-water emulsion makeup cosmetic of the present invention is stable over time, has a smooth and spreading feel during use, is excellent in glossiness, and has high durability of the makeup film.

Modes for Carrying Out the Invention

[0010] Hereinafter, the present invention will be described in detail. In this specification, "~" means a range including the numerical values before and after it, and "%", unless otherwise specified, refers to "% by weight".

[0011] The copolymer of component (A) vinyl pyrrolidone and C18-C30 alkene used in the present invention is not particularly limited as long as it is usually used in cosmetics. For example, examples of the alkene having 18 to 30 carbon atoms include 1-octadecene, 1-eicosene, 1-docosene, 1-tetracosene, 1-tricontene, etc., and those copolymerized with vinyl pyrrolidone can be used. A (VP / eicosene) copolymer is preferable in terms of glossiness and durability of the makeup film.

[0012] The content of component (A) is preferably 0.1% or more in order to have a smooth and spreading feel during use, be excellent in glossiness, and be less likely to cause makeup collapse. Further, it is preferably 0.5% or less, more preferably 0.3% or less. If it is less than 0.1%, the durability and glossiness of the makeup film are low, and if it exceeds 0.5%, it may not spread smoothly.

[0013] The content of xanthan gum in component (B) is preferably 0.1% or more. Also, it is preferably 0.5% or less, more preferably 0.3% or less. If it is less than 0.1%, it will affect stability, smooth spreading, and glossiness. If it exceeds 0.5%, stickiness peculiar to xanthan gum during application or stickiness after application may occur.

[0014] The oil agent used in the present invention is not particularly limited, and oil agents generally used in cosmetics such as hydrocarbons, fats and oils, waxes, synthetic esters, silicones, fatty acids, and higher alcohols can be used. For example, squalane, mineral oil, petrolatum, paraffin, microcrystalline wax, olive oil, almond oil, macadamia nut oil, meadowfoam oil, triethylhexanoin, beeswax, lanolin, carnauba wax, candelilla wax, jojoba seed oil, cetyl palmitate, octyldodecyl myristate, neopentyl glycol diisononanoate, cetyl ethylhexanoate, isononyl isononanoate, dimethicone, phenyltrimethicone, cyclomethicone, stearic acid, isostearic acid, myristic acid, cetanol, stearyl alcohol, behenyl alcohol, cetostearyl alcohol, cholesterol, etc., common oil agents used in cosmetics can be mentioned.

[0015] The surfactant used in the present invention is not particularly limited, and surfactants generally used in cosmetics can be used. Preferably, it is a nonionic surfactant composed of fatty acids having 18 carbon atoms. For example, sorbitan fatty acid esters, polyglycerin fatty acid esters, propylene glycol fatty acid esters, fatty acid alkyl glucosides, sucrose fatty acid esters, polyoxyethylene hydrogenated castor oil, etc. can be mentioned. More specifically, sorbitan isostearate, glyceryl monostearate, polyethylene glycol monostearate, etc. can be mentioned. From the viewpoint of emulsion stability, it is more preferable to use a combination of two or more of these surfactants.

[0016] The water-in-oil type emulsified makeup cosmetic of the present invention can further contain various components according to the purpose of use. For example, UV absorbers, preservatives, antioxidants, skin-whitening agents, vitamins, amino acids, peptides, plant extracts, pigments, dyes, fragrances, binders, thickeners, saccharides, chelating agents, keratin-improving agents, etc. can be contained within a range that does not impair the effects of the present invention.

[0017] The water-in-oil type emulsified makeup cosmetic of the present invention is prepared by using an apparatus for manufacturing ordinary emulsified cosmetics and stirring and mixing them.

[0018] The dosage form of the water-in-oil type emulsified makeup cosmetic of the present invention is not particularly limited, and examples thereof include emulsions and creams. Further, the water-in-oil type emulsified makeup cosmetic according to the present invention can be used as a multi-use makeup cosmetic that can be used on any part of the eyes, cheeks, and décolletage. Generally, a multi-use makeup cosmetic is not a cosmetic that can be used only on one part such as only the eyes like eyeshadow or only the lips like lipstick, but represents a makeup cosmetic that can be used on two or more parts such as the eyes and cheeks, cheeks and lips, cheeks and décolletage, etc. The water-in-oil type emulsified makeup cosmetic of the present invention is preferably used as a multi-use makeup cosmetic that can be used on two or more parts of the eyes, cheeks, and décolletage, and more preferably used as a multi-use makeup cosmetic that can be used on all three parts.

[0019] Next, the present invention will be described in more detail with reference to examples. The present invention is not limited thereby. Note that the numerical values in the table indicate the content (weight%).

Examples

[0020] The water-in-oil type emulsified multi-use makeup cosmetic shown in Table 1 was prepared by the following method. (Preparation Method) To the component a part heated to 80°C, the component b part heated to 80 - 85°C was added little by little with stirring to emulsify, and then the component c part was added and stirred, and it was cooled to 35°C for preparation.

[0021] (Evaluation Method 1) Five professional panelists in their 20s to 40s were asked to use the oil-in-water type emulsified multi-use makeup cosmetics of the above Examples and Comparative Examples on all parts of the eyes, cheeks, and décolletage. Regarding the non-stickiness during use, smooth spreadability, glossiness, and high durability of the makeup film, scores were given according to the following evaluation criteria, and the average score of each cosmetic was calculated and judged according to the following judgment criteria. <Evaluation Criteria> [Score] Very good: 5 Good: 4 Average: 3 Slightly poor: 2 Poor: 1 <Judgment Criteria> [Average score of the score] [Judgment] 4.0 or more ◎ 3.0 or more and less than 4.0 ○ 2.0 or more and less than 3.0 △ Less than 2.0 ×

[0022] (Evaluation Method 2) After storing in a constant temperature bath at 40°C for 3 months, visual observation of the appearance and observation of the emulsified particles with an optical microscope (BX53 manufactured by Olympus Corporation) were performed, and the evaluation was carried out according to the following judgment criteria. <Judgment Criteria> ◎: There is no significant change in the appearance, and there is no change in the emulsified particles. ○: There is no significant change in the appearance, but the emulsified particles have become larger. △: There is no separation, but there is a change in the appearance, and the emulsified particles have become larger. ×: Oil separation is observed, and a change in the appearance is observed.

[0023]

Table 1

[0024] From the results in Table 1, when the components (A) and (B) were contained in the amounts shown in Examples 1 to 5, excellent stability over time was achieved, and good results were obtained in all items related to the usability. On the other hand, when the component (A) was not contained or the content was low as in Comparative Examples 1 and 2, the glossiness and the durability of the makeup film were affected. When the content of component (A) was high as in Comparative Example 3, the base became hard and the smooth spreadability was affected. Also, when other oil-based film-forming agents were contained instead of component (A) as in Comparative Examples 4 and 5, stickiness occurred, there was no glossiness, and the smooth spreadability was affected. When a hydrophilic film-forming agent was contained instead of component (A) as in Comparative Example 6, the smooth spreadability, glossiness, durability of the makeup film, and stability deteriorated.

[0025] Moreover, when component (B) was not contained or the content of component (B) was low as in Comparative Examples 7 and 8, the smooth spreadability, glossiness, and stability were affected. When the content of component (B) was high as in Comparative Example 9, stickiness and slipperiness peculiar to xanthan gum occurred. Also, when other polysaccharide-based water-soluble thickeners were contained instead of component (B) as in Comparative Example 10, compared to component (B), the smooth spreadability, glossiness, and durability of the makeup film were lacking.

[0026] As described above, by containing a copolymer of vinylpyrrolidone and C18 - C30 alkene, and xanthan gum, it has been clarified that an oil-in-water type emulsified makeup cosmetic with excellent stability, a smooth spreading usability, excellent glossiness, and excellent durability of the makeup film can be obtained.

Industrial Applicability

[0027] The present invention can obtain an oil-in-water type emulsified makeup cosmetic with excellent stability, a smooth spreading usability, excellent glossiness, and excellent durability of the makeup film by containing a copolymer of vinylpyrrolidone and C18 - C30 alkene, and xanthan gum.

Claims

1. An oil-in-water emulsion makeup cosmetic characterized by containing the following components (A) and (B). Component (A): 0.1 to 0.5% by weight of a copolymer of vinylpyrrolidone and C18-C30 alkene Component (B): 0.1 to 0.5% by weight of xanthan gum

2. The oil-in-water emulsion makeup cosmetic according to Claim 1, wherein the copolymer of vinylpyrrolidone and C18-C30 alkene in Component (A) is a (VP / eicosene) copolymer.

3. The oil-in-water emulsion makeup cosmetic according to Claim 1 or 2, wherein the oil-in-water emulsion makeup cosmetic is used on the eyes, cheeks, or décolletage.

4. The oil-in-water multi-use makeup cosmetic according to Claim 1 or 2, wherein the oil-in-water emulsion makeup cosmetic is used on two or more of the eyes, cheeks, and décolletage.

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