Skin cosmetic composition

Abstract

To provide a skin cosmetic composition excellent in compatibility with wet skin, suppressing sliminess after application, and excellent in smoothness when applied.SOLUTION: A skin cosmetic composition comprising (A) one or more selected from the group consisting of an ester of a monocarboxylic acid and an alcohol having 2 or more and 20 or less carbon atoms and a hydrocarbon that is liquid at 25 °C, and (B) one or more selected from the group consisting of isostearyl alcohol, octyldodecanol, decyltetradecanol, oleyl alcohol, lauryl alcohol, and hexyldecanol, wherein the content of the component (B) is 16% by mass or more and 80% by mass or less based on the total amount of the skin cosmetic composition.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a skin cosmetic composition. [Background technology]

[0002] In recent years, there has been a demand for moisturizers that can be applied directly to wet skin, which are easy to use and provide a high moisturizing effect, in order to prevent dryness of the skin after bathing. For example, Patent Document 1 proposes a liquid oil composition containing sterols, a higher fatty acid having 12 to 24 carbon atoms that is liquid at 20°C, an ester oil and / or an ether oil, a hydrocarbon oil, a silicone oil having a viscosity of 20 mPa·s or less at 25°C, and a higher alcohol having 12 to 24 carbon atoms, with the aim of providing a moisturizer that has excellent skin-covering properties and an excellent feel when used, such as smoothness (see, for example, Patent Document 1).

[0003] However, conventional moisturizers, including the one described in Patent Document 1, have the problem that when applied to wet skin, they do not mix sufficiently with the moisture on the skin, and do not blend well with the skin after application. Furthermore, other formulations such as emulsion-type moisturizers do not leave a sticky feeling on the skin after application. Furthermore, moisturizers are also required to have a basic performance of providing a good feeling when used, such as smoothness upon application.

[0004] Therefore, there is a demand for a skin cosmetic composition that has excellent compatibility with wet skin, suppresses stickiness after application, and provides excellent smoothness upon application. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-227301 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention aims to solve the above-mentioned problems of the prior art and to achieve the following object: That is, the present invention aims to provide a skin cosmetic composition that has excellent compatibility with wet skin, suppresses stickiness after application, and provides excellent smoothness upon application. [Means for solving the problem]

[0007] The skin cosmetic composition of the present invention as a means for solving the problems comprises: (A) one or more selected from esters of monocarboxylic acids and alcohols having 2 to 20 carbon atoms, and hydrocarbons that are liquid at 25°C; (B) one or more selected from isostearyl alcohol, octyldodecanol, decyltetradecanol, oleyl alcohol, lauryl alcohol, and hexyldecanol; A skin cosmetic composition comprising: The content of the component (B) is 16% by mass or more and 80% by mass or less based on the total amount of the skin cosmetic composition.

[0008] The present invention is based on the findings of the present inventors, and the means for solving the above problems are as follows: <1> (A) one or more selected from esters of monocarboxylic acids and alcohols having 2 to 20 carbon atoms, and hydrocarbons that are liquid at 25°C; (B) one or more selected from isostearyl alcohol, octyldodecanol, decyltetradecanol, oleyl alcohol, lauryl alcohol, and hexyldecanol; A skin cosmetic composition comprising: The skin cosmetic composition is characterized in that the content of the component (B) is 16% by mass or more and 80% by mass or less based on the total amount of the skin cosmetic composition. <2> the mass ratio of the content of the component (B) to the content of the component (A) [(B) / (A)] is 0.65 or more and 2.5 or less; <1> The skin cosmetic composition according to claim 1. <3> The content of the component (A) is 15% by mass or more and 60% by mass or less based on the total amount of the skin cosmetic composition. <1> or the above <2> The skin cosmetic composition according to claim 1. <4> (C) The above, which contains a vegetable oil that is liquid at 25°C. <1> From the above <3> The skin cosmetic composition according to any one of the above items. <5> The content of water is less than 1% by mass based on the total amount of the skin cosmetic composition. <1> From the above <4> The skin cosmetic composition according to any one of the above items. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a skin cosmetic composition that has excellent compatibility with wet skin, suppresses stickiness after application, and provides excellent smoothness upon application. DETAILED DESCRIPTION OF THE INVENTION

[0010] (Skin cosmetic composition) The skin cosmetic composition of the present invention contains (A) one or more selected from esters of monocarboxylic acids and alcohols having from 2 to 20 carbon atoms, and hydrocarbons that are liquid at 25°C, and (B) one or more selected from isostearyl alcohol, octyldodecanol, decyltetradecanol, oleyl alcohol, lauryl alcohol, and hexyldecanol, and may optionally contain (C) a vegetable oil that is liquid at 25°C, and other ingredients.

[0011] In this specification, "(A) one or more selected from esters of monocarboxylic acids and alcohols having from 2 to 20 carbon atoms, and hydrocarbons that are liquid at 25°C" may be referred to as "(A)" or "component (A)." In this specification, "(B) one or more selected from isostearyl alcohol, octyldodecanol, decyltetradecanol, oleyl alcohol, lauryl alcohol, and hexyldecanol" may be referred to as "(B)" or "component (B)." In this specification, "(C) vegetable oil that is liquid at 25°C" may be referred to as "(C)" or "component (C)."

[0012] <(A) one or more selected from esters of monocarboxylic acids and alcohols having from 2 to 20 carbon atoms, and hydrocarbons that are liquid at 25°C> The component (A) imparts a stickiness suppressing effect to the skin cosmetic composition.

[0013] The component (A) is not particularly limited and can be appropriately selected depending on the purpose, but from the viewpoint of obtaining a good stickiness suppression effect, isopropyl myristate, isopropyl palmitate, isononyl isononanoate, ethyl isostearate, ethylhexyl palmitate, octyldodecyl myristate, 2-hexyldecyl isostearate, octyldodecyl stearoyloxystearate, liquid paraffin, squalane, and hydrogenated polyisobutene are preferred, and isopropyl myristate, isopropyl palmitate, ethyl isostearate, ethylhexyl palmitate, octyldodecyl myristate, and liquid paraffin are more preferred. These may be used alone or in combination of two or more.

[0014] The content of the (A) component is not particularly limited and can be selected appropriately depending on the purpose. However, from the viewpoint of achieving a good stickiness suppression effect and good compatibility with wet skin, the content is preferably 10% by mass or more and 80% by mass or less, and more preferably 15% by mass or more and 60% by mass or less, of the total amount of the skin cosmetic composition. When the content of the component (A) is 10% by mass or more relative to the total amount of the skin cosmetic composition, the stickiness suppression effect is good. When the content of the component (A) is 80% by mass or less relative to the total amount of the skin cosmetic composition, the skin cosmetic composition will have good compatibility with wet skin.

[0015] The component (A) may be an appropriately synthesized product or a commercially available product. Commercially available products of the component (A) include, for example, trade names such as isopropyl myristate (IPM-R, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), isopropyl palmitate (IPP, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), isononyl isononanoate (KAK99, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), ethyl isostearate (EIS-V, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), ethylhexyl palmitate (IOP, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), octyldodecyl myristate (ODM, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), 2-hexyldecyl isostearate (ICIS, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), and octyldodecyl stearoyloxystearate (Lithocasta). Examples of suitable squalane include ODSHS (manufactured by Kokyu Alcohol Kogyo Co., Ltd.), liquid paraffin (liquid paraffin No. 350-S, manufactured by Sanko Chemical Industry Co., Ltd.), squalane (NIKKOL Squalane, NIKKOL Sugar Squalane, manufactured by Nikko Chemicals Co., Ltd.), and hydrogenated polyisobutene (Palmleam 4, manufactured by NOF Corporation).

[0016] <(B) One or more selected from isostearyl alcohol, octyldodecanol, decyltetradecanol, oleyl alcohol, lauryl alcohol, and hexyldecanol> The component (B) imparts to the skin cosmetic composition good compatibility with wet skin.

[0017] As the component (B), isostearyl alcohol, octyldodecanol, and oleyl alcohol are preferred from the viewpoint of good compatibility with wet skin.

[0018] The content of the (B) component is from 16% by mass to 80% by mass, preferably from 34% by mass to 60% by mass, from the viewpoint of good compatibility with wet skin and good smoothness upon application. When the content of the component (B) is 16% by mass or more relative to the total amount of the skin cosmetic composition, the skin cosmetic composition will have good compatibility with wet skin. When the content of the component (B) is 80% by mass or less relative to the total amount of the skin cosmetic composition, smoothness upon application is improved.

[0019] As the component (B), an appropriately synthesized product or a commercially available product may be used. Examples of commercially available products of the component (B) include, by trade name, isostearyl alcohol (Lisonol 18SP, Isostearyl Alcohol EX, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), octyldodecanol (Lisonol 20SP, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), decyltetradecanol (Lisonol 24SP, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), oleyl alcohol (Oleyl Alcohol VP, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), lauryl alcohol (NAA-42, manufactured by NOF Corporation), and hexyldecanol (Lisonol 16SP, manufactured by Kokyu Alcohol Kogyo Co., Ltd.).

[0020] <(C) Vegetable oil that is liquid at 25°C> The component (C) may be contained in the skin cosmetic composition as needed. The component (C) imparts a lasting moist feeling to the skin cosmetic composition.

[0021] The component (C) is not particularly limited and can be appropriately selected depending on the purpose. From the viewpoint of anti-stickiness effect and good compatibility with wet skin, avocado oil, almond oil, olive oil, apricot kernel oil, wheat germ oil, sesame oil, rice bran oil, safflower oil, soybean oil, tea seed oil, camellia oil, evening primrose oil, corn oil, rapeseed oil, castor oil, castor oil fatty acid methyl ester, sunflower oil, grape oil, jojoba oil, macadamia nut oil, meadowholm oil, cottonseed oil, peanut oil, jojoba seed oil, rosehip oil, adlay oil, and grapeseed oil are preferred, and almond oil, wheat germ oil, rice bran oil, evening primrose oil, castor oil, jojoba oil, macadamia nut oil, jojoba seed oil, rosehip oil, adlay oil, and grapeseed oil are more preferred. These may be used alone or in combination of two or more.

[0022] The content of the component (C) is preferably from 1% to 20% by mass, more preferably from 5% to 10% by mass, from the viewpoint of suppressing stickiness and maintaining moist feeling. When the content of the component (C) is 1% by mass or more relative to the total amount of the skin cosmetic composition, the moist feeling is maintained for a long time. When the content of the component (C) is 20% by mass or less relative to the total amount of the skin cosmetic composition, the stickiness suppression effect is good.

[0023] The component (C) may be an appropriately synthesized product or a commercially available product. Examples of commercially available products of component (C) include avocado oil (NIKKOL refined avocado oil, manufactured by Nikko Chemicals Co., Ltd.), almond oil (almond oil, manufactured by Summit Oil Mills Co., Ltd.), olive oil (olive oil (refined), manufactured by Summit Oil Mills Co., Ltd.), and apricot kernel oil (NIKKOL Apricot kernel oil (Nikko Chemicals Co., Ltd.), wheat germ oil (Wheat germ oil (Summit Oil Mills Co., Ltd.), sesame oil (Sesame oil (refined) (Summit Oil Mills Co., Ltd.), rice bran oil (Rice bran oil (Oryza Oil & Fat Chemical Co., Ltd.), safflower oil (Safflower oil (Summit Oil Mills Co., Ltd.), soybean oil (Soybean oil (refined) (Summit Oil Mills Co., Ltd.), tea seed oil (Tea seed oil (Summit Oil Mills Co., Ltd.), camellia oil (Yucha oil (Summit Oil Mills Co., Ltd.)), evening primrose oil (Evening primrose oil (Summit Oil Mills Co., Ltd.)), corn oil (NIKKOL Corn germ oil, manufactured by Nikko Chemicals Co., Ltd.), castor oil (castor oil, manufactured by Ito Oil Mills Co., Ltd.), sunflower oil (high oleic sunflower oil, manufactured by Summit Oil Mills Co., Ltd.), jojoba oil (jojoba oil, manufactured by Summit Oil Mills Co., Ltd.), macadamia nut oil (macadamia nut oil, manufactured by Summit Oil Mills Co., Ltd.), meadowhome oil (NIKKOL Meadowhome oil, manufactured by Nikko Chemicals Co., Ltd.), cottonseed oil (cottonseed oil (white refined oil), manufactured by Summit Oil Mills Co., Ltd.), peanut oil (peanut oil (refined), manufactured by Summit Oil Mills Co., Ltd.), jojoba seed oil (NIKKOL Jojoba Oil S, manufactured by Nikko Chemicals Co., Ltd.), rosehip oil (rosehip oil, manufactured by Summit Oil Mills Co., Ltd.), Job's beet oil (job's beet oil, manufactured by Summit Oil Mills Co., Ltd.), grapeseed oil (grape oil (grape seed oil), manufactured by Summit Oil Mills Co., Ltd.), and the like.

[0024] <Mass ratio [(B) / (A)]> In the skin cosmetic composition of the present invention, from the viewpoint of achieving good compatibility with wet skin and good smoothness upon application, the mass ratio of the content of the component (B) to the content of the component (A) [(B) / (A)] is preferably 0.3 or more and 4.5 or less, more preferably 0.65 or more and 2.5 or less. When the mass ratio [(B) / (A)] is 0.3 or more, the composition will blend well with wet skin. When the mass ratio [(B) / (A)] is 4.5 or less, smoothness during application is good.

[0025] <Other ingredients> In addition to the components (A) to (C), the skin cosmetic composition of the present invention may contain other components as needed, provided that the effects of the present invention are not impaired. Examples of the other ingredients include water, moisturizers, powder ingredients, higher alcohols other than the ingredient (B), ester oils other than the ingredient (A), silicone oils, silicone compounds, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, natural water-soluble polymers, semi-synthetic water-soluble polymers, synthetic water-soluble polymers, cationic polymers, thickening polymers, thickeners, ultraviolet absorbers, ultraviolet protection agents, vitamin compounds, sequestering agents, lower alcohols, polyhydric alcohols, monosaccharides, oligosaccharides, polysaccharides, amino acids, organic amines, polymer emulsions, pH adjusters, antioxidants, antioxidant aids, preservatives, anti-inflammatory agents, whitening agents, activators, blood circulation promoters, antiseborrheic agents, anti-inflammatory agents, refreshing agents (also known as cooling agents), bactericidal ingredients, antiperspirant ingredients, animal extracts, plant extracts, various extracts, pearlizing agents, and fragrances. The content of the other ingredients in the skin cosmetic composition is not particularly limited and can be appropriately selected depending on the purpose.

[0026] The fragrance is not particularly limited and can be appropriately selected depending on the purpose. Examples include fragrances A to D described in paragraphs

[0065] to

[0071] of JP 2002-128658 A, fragrances A to E described in paragraphs

[0076] to

[0088] of JP 2003-73249 A, and blended fragrance compositions 1 to 4 described in paragraphs

[0016] to

[0023] of JP 2020-132680 A.

[0027] When water is contained as the other component, the content of water is preferably less than 1% by mass relative to the total amount of the skin cosmetic composition, from the viewpoint of maintaining the uniformity of the preparation.

[0028] [Properties of the skin cosmetic composition] The skin cosmetic composition of the present invention is preferably liquid at 25°C.

[0029] The pH of the skin cosmetic composition of the present invention at 25° C. is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 6.0 or more and 8.0 or less. The pH can be measured, for example, using a glass electrode color hydrogen ion concentration indicator HM-30R (manufactured by TOA DKK, electrode type GST-5721).

[0030] The viscosity of the skin cosmetic composition of the present invention at 25° C. is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 5 to 150 mPa·s. The viscosity can be measured, for example, by a BL type viscometer (rotor No. 1, 60 rpm, 1 minute, manufactured by Tokyo Keiki Co., Ltd.).

[0031] The formulation of the skin cosmetic composition of the present invention is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include liquid and mist forms.

[0032] -Applications- The application site and method of the skin cosmetic composition are not particularly limited and can be appropriately selected depending on the purpose. For example, the composition can be applied to the arms, legs, trunk, hands, etc. in a usual manner. The use of the skin cosmetic composition is not particularly limited and can be appropriately selected depending on the purpose, but is preferably a moisturizer, and more preferably an oil-based moisturizer (non-aqueous moisturizer). [Example]

[0033] The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to these examples. The content of each component described in the examples and comparative examples is shown in "% by mass", the total amount is 100% by mass, and all values ​​are converted to pure contents.

[0034] (Examples 1 to 25 and Comparative Examples 1 to 9) Each skin cosmetic composition was prepared by mixing the components according to the composition and content shown in Examples 1 to 25 and Comparative Examples 1 to 9.

[0035] Each skin cosmetic composition was evaluated and judged for its "compatibility with wet skin," "non-stickiness," "smoothness upon application," and "durability of moist feeling" as follows. The results are shown in Tables 1 to 7 below.

[0036] <Evaluation of compatibility with wet skin> 0.1 g of each skin cosmetic composition was applied to the wet inner side of the left forearm, and the "compatibility with wet skin" was evaluated based on the following criteria. The average score of 10 panelists was calculated, and the result was judged based on the following criteria. -Evaluation criteria- 4 points: 90% or more of the application area can be evenly coated 3 points: 70% to less than 90% of the application area can be evenly coated 2 points: 50% to less than 70% of the application area can be evenly coated 1 point: Less than 50% of the application area can be evenly coated -Judgment criteria- ◎: 3.5 points or more ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

[0037] <Evaluation of smoothness upon application> 0.1 g of each skin cosmetic composition was applied to the wet inner side of the left forearm, and the "smoothness" was evaluated based on the following evaluation criteria. The average score of 10 panelists was calculated, and the result was judged based on the following criteria for judging the average score. -Evaluation criteria- 4 points: Very smooth 3 points: Smooth 2 points: Not very smooth 1 point: Not smooth -Judgment criteria- ◎: 3.5 points or more ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

[0038] <Evaluation of non-stickiness> 0.1 g of each skin cosmetic composition was applied to the wet inner side of the left forearm, and the "non-stickiness" was evaluated based on the following evaluation criteria. The average score of 10 panelists was calculated, and the result was judged based on the following criteria for judging the average score. -Evaluation criteria- 4 points: No stickiness 3 points: slightly slimy 2 points: Slimy 1 point: Very slimy -Judgment criteria- ◎: 3.5 points or more ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

[0039] <Evaluation of moisturizing lasting power> 0.1 g of each skin cosmetic composition was applied to the wet inner side of the left forearm, and the subject was then allowed to rest for 60 minutes in a thermostatic chamber at 22°C and 44% RH. The "durability of moisturizing" was then evaluated based on the following criteria. The average scores of the 10 subjects were calculated, and the results were judged based on the following criteria. -Evaluation criteria- 4 points: Very moist 3 points: Moist 2 points: Slightly moist 1 point: No moist feeling -Judgment criteria- ◎: 3.5 points or more ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

[0040] [Table 1]

[0041] [Table 2]

[0042] [Table 3]

[0043] [Table 4]

[0044] [Table 5]

[0045] [Table 6]

[0046] [Table 7]

[0047] Details of each component used in Examples 1 to 25 and Comparative Examples 1 to 9 are shown in Table 8 below.

[0048] [Table 8] [Industrial Applicability]

[0049] The skin cosmetic composition has excellent compatibility with wet skin, suppresses stickiness after application, and provides excellent smoothness upon application, and therefore can be suitably used, for example, as a moisturizer, more preferably as an oil-based moisturizer (non-aqueous moisturizer).

Claims

1. (A) one or more selected from esters of monocarboxylic acids and alcohols having 2 to 20 carbon atoms, and hydrocarbons that are liquid at 25°C; (B) one or more selected from isostearyl alcohol, octyldodecanol, decyltetradecanol, oleyl alcohol, lauryl alcohol, and hexyldecanol; A skin cosmetic composition comprising: A skin cosmetic composition characterized in that the content of the component (B) is 16% by mass or more and 80% by mass or less based on the total amount of the skin cosmetic composition.

2. 2. The skin cosmetic composition according to claim 1, wherein the mass ratio of the content of the component (B) to the content of the component (A) [(B) / (A)] is 0.65 or more and 2.5 or less.

3. The skin cosmetic composition according to claim 1 or 2, wherein the content of the component (A) is 15% by mass or more and 60% by mass or less, based on the total amount of the skin cosmetic composition.

4. The skin cosmetic composition according to claim 1 or 2, comprising (C) a vegetable oil that is liquid at 25°C.

5. The skin cosmetic composition according to claim 1 or 2, wherein the water content is less than 1% by mass based on the total amount of the skin cosmetic composition.

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