Oil-in-water emulsion cosmetic

Abstract

To provide an oil-in-water emulsion cosmetic capable of spreading smoothly even when applied thickly and achieving both a pleasant film-forming sensation and non-stickiness after some time, for example, after about 30 minutes, following the thick application, and also capable of sustaining a moisturizing effect over an extended period, for example, a period from bedtime until the following morning.SOLUTION: Provided is an oil-in-water emulsion cosmetic containing 5 to 30 mass% of component (a), 5 to 20 mass% of component (b), 5 to 20 mass% of component (c), 0.001 to 1 mass% of component (d), and 0.1 to 5 mass% of component (e), in which the component (a) is an oil agent that is liquid at 25°C, the component (b) is an oil agent having a melting point of 30 to 50°C, the component (c) is an oil agent having a melting point of 60 to 80°C, the component (d) is a thickening polysaccharide, and the component (e) is a mono-fatty acid polyethylene glycol with a fatty acid having a carbon number of 12 to 22.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an oil-in-water emulsion cosmetic to be used on the face, body, etc., and in particular to an oil-in-water emulsion cosmetic that is suitably used as a leave-on type pack cosmetic. [Background technology]

[0002] The skin care market has expanded in recent years, and the market for anti-aging products has been growing in particular. This is due to the increase in the elderly population and the growing awareness of anti-aging care among young people, and the demand for cosmetics that maintain youthful skin is increasing. In order to maintain youthful skin, the skin needs to have a certain level of moisture retention, but aging and the effects of ultraviolet rays reduce the skin's moisture retention and make it more susceptible to dryness. For this reason, skin care cosmetics are used to hydrate the skin and prevent it from drying out. In particular, in addition to basic cosmetics for everyday use such as lotions, milks, and creams, the demand for pack cosmetics as a form of special care is increasing. Pack cosmetics are known to be highly effective in permeating skin care ingredients and moisture into the skin by leaving them on for a long time, moisturizing and moisturizing dry skin. Among pack cosmetics, cream or gel pack cosmetics that are leave-on type pack cosmetics that can be applied before going to bed and can be used easily without rinsing off are particularly popular.

[0003] Leave-on type pack cosmetics are often used before going to bed, and are required to have a moisturizing effect that lasts until the next morning. Applying a thick layer of the product creates a thicker film, making it easier for the moisturizing effect to last until the next morning, but the sticky feeling can make you feel uncomfortable while sleeping.

[0004] Furthermore, cream-type pack cosmetics, which are often applied thickly, tend to contain a large amount of oil that is solid at room temperature in order to facilitate thick application and to maintain a moisturizing feeling until the next morning, which can make the cosmetics difficult to spread due to poor spreadability.

[0005] Patent Document 1 describes an oil-in-water emulsion cosmetic that is free from slippery or sticky feeling after application and can maintain a moist feeling until the next morning. However, the oil-in-water emulsion cosmetic described in this document is difficult to spread when applied, and does not provide a coating feeling and a lack of stickiness some time after application.

[0006] Patent Document 2 describes a pack cosmetic that can be left on for a long time without needing to be washed off after application, that has an excellent feel when used, such as good spreadability, no stickiness, and no twisting, that has an excellent whitening effect by preventing inflammation caused by ultraviolet rays and suppressing melanin production, and that further enhances the penetration of whitening ingredients and skin care ingredients to impart a long-lasting moisturizing effect to the skin after use. However, the pack cosmetic described in this document was not able to achieve both a film-like feel some time after application and no stickiness.

[0007] As described above, it has been difficult using existing technologies to develop a leave-on pack cosmetic that can provide a sustained moisturizing effect from before going to bed until the next morning, is easy to spread even when applied thickly, and further, provides a film-like feeling and is not sticky even some time after application. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Patent Publication No. 2022-91401 [Patent Document 2] JP 2012-36149 A Summary of the Invention [Problem to be solved by the invention]

[0009] In view of the above problems, the present invention has an object to provide an oil-in-water emulsion cosmetic that can be suitably used in a leave-on type pack cosmetic, which spreads well when applied thickly, provides a film-like feel and is non-sticky some time after application, for example about 30 minutes later, and can maintain a moisturizing feel for a long period of time, such as from before going to bed until the next morning. [Means for solving the problem]

[0010] As a result of intensive research into solving the above-mentioned problems, the present inventors have found that an oil-in-water emulsion cosmetic that can solve the above-mentioned problems can be obtained by incorporating a combination of an oil that is liquid at 25°C, an oil with a melting point of 30 to 50°C, an oil with a melting point of 60 to 80°C, a thickening polysaccharide, and a mono-fatty acid polyethylene glycol having a fatty acid with 12 to 22 carbon atoms, each in a specific range of content, and have thus completed the present invention.

[0011] That is, the present invention includes the following aspects. An oil-in-water emulsion cosmetic comprising 5 to 30 mass% of component (a), 5 to 20 mass% of component (b), 5 to 20 mass% of component (c), 0.001 to 1 mass% of component (d), and 0.1 to 5 mass% of component (e). Component (a): An oil that is liquid at 25°C Component (b): Oil with a melting point of 30 to 50°C Component (c): Oil with a melting point of 60 to 80°C Ingredient (d): Thickening polysaccharides Component (e): Mono-fatty acid polyethylene glycol having a fatty acid carbon number of 12 to 22 Effect of the Invention

[0012] The oil-in-water emulsion cosmetic of the present invention spreads well when applied thickly, and after application for a while, for example about 30 minutes, it can achieve both a film-like feel and a lack of stickiness, and can maintain a moisturizing feeling for a long period of time, such as from before going to bed until the next morning, making it suitable for use in leave-on pack cosmetics. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described, however, the present invention is not limited to the embodiment described in this specification, and various modifications are possible without departing from the gist of the present invention. In this specification, a numerical range defined using the symbol "~" or "-" is intended to include both the upper and lower limits of the range. For example, "2~5" means 2 or more and 5 or less. Furthermore, in the numerical ranges described in this specification, the upper limit or lower limit of the numerical ranges can be replaced with values ​​shown in the examples or values ​​that are uniquely derived from the examples. Furthermore, in this specification, the number added next to "C" indicates the number of carbon atoms, for example, (C13-15) represents a mixture containing compounds having 13 or more and 15 or less carbon atoms.

[0014] <Oil-in-water emulsion cosmetics> The oil-in-water emulsion cosmetic of the present invention contains component (a): an oil that is liquid at 25°C, component (b): an oil having a melting point of 30 to 50°C, component (c): an oil having a melting point of 60 to 80°C, component (d): a thickening polysaccharide, and component (e): a mono-fatty acid polyethylene glycol having a fatty acid with 12 to 22 carbon atoms. Each component will be described below. The content of each component is the content when the total amount of the oil-in-water emulsion cosmetic of the present invention is taken as 100% by mass.

[0015] [Component (a): An oil that is liquid at 25°C] The component (a) used in the present invention is an oil agent that is liquid at 25° C. In this specification, "liquid at 25° C." refers to a state that has fluidity in an environment of 25° C. under 1 atmosphere, and includes a viscous paste-like state. In other words, an oil agent that is liquid at 25° C. has a melting point of 25° C. or lower.

[0016] As component (a), those commonly used in cosmetics can be used without any particular limitation, and examples of such components include hydrocarbon oils, ester oils, vegetable oils, higher alcohols, silicone oils, etc. Component (a) may be used alone or in combination of two or more types.

[0017] Examples of the hydrocarbon oil include squalane, olefin oligomer, mineral oil, hydrogenated polyisobutene, light isoparaffin, light liquid isoparaffin, and alkanes having 9 to 15 carbon atoms, such as (C9-12) alkanes and (C13-15) alkanes. Of these, squalane, (C9-12) alkanes, and (C13-15) alkanes are preferred.

[0018] Examples of ester oils include esters of (C8-16) carboxylic acids and (C8-20) alcohols, specifically cetyl ethylhexanoate, ethylhexyl palmitate, octyldodecyl myristate, isopropyl myristate, cetyl octanoate, etc. Among these, cetyl ethylhexanoate, ethylhexyl palmitate, and octyldodecyl myristate are preferred.

[0019] Examples of vegetable oils include olive fruit oil, hybrid sunflower oil, meadowfoam oil, macadamia nut oil, avocado oil, sesame oil, almond oil, soybean oil, jojoba oil, etc. Among these, olive fruit oil and hybrid sunflower oil are preferred.

[0020] Examples of higher alcohols include (C14-22) alcohols, hexyldecanol, isostearyl alcohol, octyldodecanol, etc. Among these, (C14-22) alcohols are preferred.

[0021] Examples of silicone oils include dimethicone, cyclopentasiloxane, caprylyl methicone, etc. Of these, dimethicone is preferred.

[0022] As component (a), alkanes having 9 to 15 carbon atoms, alcohols having 14 to 22 carbon atoms, dimethicone, and olive fruit oil are more preferred, and the combined use of some of these is particularly preferred, and the combined use of all of these is even more preferred. As an oil agent containing (C9-12) alkanes, (C13-15) alkanes, and (C14-22) alcohols, for example, "BIOLEAM (registered trademark)" (manufactured by NOF Corporation) is commercially available. The content of non-polar oils such as (C9-12) alkanes, (C13-15) alkanes, and dimethicone is preferably 0.5 to 4 times, more preferably 1 to 3 times, the content of polar oils such as (C14-22) alcohols and olive fruit oils.

[0023] The content of component (a) is 5 to 30% by mass, preferably 8 to 25% by mass, and more preferably 11 to 20% by mass. If the content of component (a) is too low, the maintenance of moisturizing feeling for a long time, the spread at the time of application, and the film feeling after a while after thick application may be insufficient, whereas if the content of component (a) is too high, the film feeling after a while after thick application and the lack of stickiness after a while after thick application may be insufficient.

[0024] [Component (b): Oil with a melting point of 30 to 50°C] The component (b) used in the present invention is an oil having a melting point of 30 to 50° C. The melting point can be measured according to the second method of melting point measurement, which is a general test method described in the Standards for Quasi-Drug Ingredients.

[0025] As component (b), those commonly used in cosmetics can be used without any particular limitation, and examples thereof include hydrocarbons, esters, waxes, oils and fats, and higher alcohols.Specific examples include myristyl myristate, hydrogenated rice bran oil, dipentaerythrityl hexa(hydroxystearic acid / stearic acid / rosin acid), dipentaerythrityl hexahydroxystearate, shea butter, tri(caprylic acid / capric acid / myristic acid / stearic acid), and myristyl alcohol.Of these, myristyl myristate, hydrogenated rice bran oil, and dipentaerythrityl hexa(hydroxystearic acid / stearic acid / rosin acid) are preferred. Component (b) may be used alone or in combination of two or more types, and a combination of some of myristyl myristate, hydrogenated rice bran oil, and dipentaerythrityl hexa(hydroxystearate / stearate / rosinate) is more preferred, and a combination of all of these is particularly preferred.

[0026] The content of component (b) is 5 to 20% by mass, preferably 7 to 16% by mass, and more preferably 9 to 11% by mass. If the content of component (b) is too low, the maintenance of moisturizing feeling for a long time and the film feeling after a while after thick application may be insufficient, while if the content of component (b) is too high, the spread at the time of application and the lack of stickiness after a while after thick application may be insufficient.

[0027] [Component (c): Oil with a melting point of 60 to 80°C] The component (c) used in the present invention is an oil having a melting point of 60 to 80° C. The melting point can be measured according to the second method of melting point measurement, which is a general test method described in the Standards for Quasi-Drug Ingredients. As component (c), those commonly used in cosmetics can be used, and are not particularly limited, but for example, hydrocarbons, esters, waxes, oils and fats, higher alcohols, etc. can be used. Specific examples include rice bran wax, sunflower seed wax, microcrystalline wax, candelilla wax, hydrogenated palm oil, hydrogenated rapeseed oil, beeswax, and behenyl alcohol. Of these, rice bran wax, hydrogenated palm oil, hydrogenated rapeseed oil, beeswax, and behenyl alcohol are preferred. As component (c), only one type may be used or two or more types may be used in combination, and it is more preferred to use some of rice bran wax, hydrogenated palm oil, hydrogenated rapeseed oil, beeswax, and behenyl alcohol in combination, and it is particularly preferred to use all of them in combination. As an oil agent containing rice bran wax, hydrogenated palm oil, and hydrogenated rapeseed oil, for example, "Refined Rice Wax R-100" (manufactured by Yokozeki Oil Industry Co., Ltd.) is commercially available.

[0028] The content of component (c) is 5 to 20% by mass, preferably 6 to 15% by mass, and more preferably 7 to 10% by mass. If the content of component (c) is too low, the maintenance of moisturizing feeling for a long time, the film feeling after a while after thick application, and the lack of stickiness after a while after thick application may be insufficient, while if the content of component (c) is too high, the spread during application and the lack of stickiness after a while after thick application may be insufficient.

[0029] [Component (d): thickening polysaccharide] The component (d) used in the present invention is a thickening polysaccharide. A thickening polysaccharide is a water-soluble polysaccharide composed of multiple sugars, and has the property of increasing viscosity when dissolved in water.

[0030] Examples of thickening polysaccharides include cellulose and cellulose derivatives, xanthan gum, gellan gum, carrageenan, pectin, mannan, curdlan, chondroitin sulfate, starch, heparan sulfate, hyaluronic acid, sodium hyaluronate, guar gum, dextran, locust bean gum, chitin, chitosan, agar, etc. Component (d) may be used alone or in combination of two or more. Considering smoothness of spreading and viscosity, xanthan gum, gellan gum, and sodium hyaluronate are preferred, and a combination of some of these is more preferred, and a combination of all of these is particularly preferred.

[0031] The content of component (d) is 0.001 to 1 mass%, preferably 0.01 to 0.6 mass%, more preferably 0.1 to 0.2 mass%. If the content of component (d) is too low, the maintenance of moisturizing feeling for a long time, spreadability at the time of application, and film feeling after a while after thick application may be insufficient, whereas if the content of component (d) is too high, the spreadability at the time of application and non-stickiness after a while after thick application may be insufficient.

[0032] [Component (e): Mono-fatty acid polyethylene glycol having a fatty acid carbon number of 12 to 22] The component (e) used in the present invention is a fatty acid monopolyethylene glycol having a fatty acid carbon number of 12 to 22, and the fatty acid carbon number is preferably 16 to 20. The number of moles of polyethylene glycol added in the fatty acid monopolyethylene glycol is preferably 40 to 150. Specifically, examples of component (e) include PEG-40 monostearate (number of moles added: 40), PEG-75 monostearate (number of moles added: 75), and PEG-150 monostearate (number of moles added: 150). Of these, PEG-75 monostearate is preferred. Component (e) may be used alone or in combination of two or more.

[0033] The content of component (e) is 0.1 to 5% by mass, preferably 0.5 to 4% by mass, and more preferably 1 to 3% by mass. If the content of component (e) is too low, the film feeling and non-stickiness after a while after thick application may be insufficient, while if the content of component (e) is too high, the spread at the time of application, the non-stickiness after a while after thick application, and the maintenance of moisturizing feeling for a long time may be insufficient.

[0034] In the oil-in-water emulsion cosmetic of the present invention, the content ratio (a) / (d) of component (a) to component (d) is preferably 50 to 300, more preferably 70 to 150, and particularly preferably 80 to 90, in terms of mass ratio. When the content ratio (a) / (d) is within the above range, the spreadability at the time of application and the lack of stickiness even after a while of thick application are further improved.

[0035] The content ratio (b) / (c) of the component (b) to the component (c) is preferably 0.6 to 2.5, more preferably 0.8 to 2.0, and particularly preferably 1.0 to 1.5, in terms of mass ratio. When the content ratio (b) / (c) is within the above range, the spread upon application, the film feeling some time after thick application, the lack of stickiness some time after thick application, and the maintenance of moisturizing feeling for a long time are further improved.

[0036] The oil-in-water emulsion cosmetic of the present invention contains water in addition to the above-mentioned components (a) to (e). Examples of water include purified water, ion-exchanged water, distilled water, RO water, tap water, and industrial water. The upper limit of the water content in the oil-in-water emulsion cosmetic of the present invention is preferably 90% by mass, more preferably 85% by mass, and particularly preferably 80% by mass. The lower limit of the water content in the oil-in-water emulsion cosmetic of the present invention is preferably 25% by mass, more preferably 30% by mass, and particularly preferably 35% by mass. If the blending amount of water is outside the above range, the stability of the oil-in-water emulsion cosmetic may decrease, or the spreadability upon application may decrease.

[0037] In addition to the above-mentioned components, the oil-in-water emulsion cosmetic of the present invention may contain additives that are generally used in cosmetics and quasi-drugs, as long as they do not impair the effects of the present invention. For example, oils and fats, waxes, higher fatty acids, and other oily agents (excluding the above-mentioned components (a) to (c)); surfactants such as nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants; moisturizing agents such as polyhydric alcohols and amino acids; thickeners such as water-soluble polymers; physiologically active ingredients such as vitamins, nucleic acids, and animal and plant extracts; preservatives, antioxidants, ultraviolet absorbing and scattering agents, pH adjusters, colorants, and fragrances, and other additives that are generally used in cosmetics, may be exemplified. These additives may be used alone or in combination of two or more, as necessary.

[0038] The content of the above-mentioned additive components in the oil-in-water emulsion cosmetic of the present invention can be set according to the amount typically used in cosmetics depending on the purpose, but is usually 30% by mass or less, preferably 0.1 to 25% by mass, and more preferably 0.5 to 20% by mass.

[0039] The oil-in-water emulsion cosmetic of the present invention, in the form of an emulsion or a semi-solid or solid form, can be used as skin cosmetics such as milky lotions, emollient creams, massage creams, etc.; makeup base cosmetics such as makeup base milky lotions and makeup base creams; and body cosmetics such as hand lotions, hand creams, body lotions, body creams, etc., and can be particularly suitably used as leave-on type pack cosmetics to be applied to the face, body, etc.

[0040] The oil-in-water emulsion cosmetic of the present invention can be prepared by various emulsification methods suitable for preparing oil-in-water emulsions. For example, the above components (a) to (c) and (e) are mixed with other oil-soluble components as necessary, and the oil phase is heated to make it uniform. The oil phase is added to a heated aqueous phase in which component (d) and water-soluble components as necessary are dissolved, and emulsified using an emulsifier such as a homomixer at a temperature range of room temperature to 90°C for about 10 to 120 minutes depending on the volume. The emulsion stability can be further improved by using a powerful high-pressure homogenizer or ultrasonic emulsifier. EXAMPLES

[0041] The following examples and comparative examples further illustrate the present invention, but the present invention is not limited thereto.

[0042] <Examples 1 to 27 and Comparative Examples 1 to 8> The oil-in-water emulsion cosmetics shown in Table 1 (Examples 1-15), Table 2 (Examples 16-27), and Table 3 (Comparative Examples 1-8) were prepared by conventional means and evaluated by the following methods. In Tables 1-3, the numerical values ​​for each component indicate the content (mass%) relative to the oil-in-water emulsion cosmetic. The components shown in Table 4 were used as common components in each Example and Comparative Example. The following raw materials were used:

[0043] Component (a) (C9-12) alkanes, (C13-15) alkanes, (C14-22) alcohols ("BIOLEAM (registered trademark)-L" (NOF Corporation)), polydimethylsiloxane ("BELSIL (registered trademark) ECO DM 5" (Wacker Asahi Kasei Silicones)), and olive fruit oil ("Olive Oil Refined" (MP Gokyo Food & Chemical Co., Ltd.)) were used.

[0044] Ingredient (b) Myristyl myristate ("SR Crodamol (registered trademark) MM-SO-(JP)" (melting point 41 to 45°C, manufactured by Croda Japan Co., Ltd.)), hydrogenated rice bran oil ("HC-35" (melting point 42 to 46°C, manufactured by Boso Oil Co., Ltd.)), and dipentaerythrityl hexa(hydroxystearic acid / stearic acid / rosin acid) ("Esterol DP-HR" (melting point approximately 35°C, manufactured by National Mimatsu Co., Ltd.)) were used.

[0045] Ingredient (c) The ingredients used were rice bran wax, hydrogenated palm oil, hydrogenated rapeseed oil ("Refined Rice Wax R-100" (melting point approximately 75°C, manufactured by Yokoseki Oil Industries Co., Ltd.)), beeswax ("ULTIMOPURE (registered trademark) BEESWAX-PA-(JP)" (melting point 60-67°C, manufactured by Croda Japan Co., Ltd.)), and behenyl alcohol ("NAA-422" (melting point approximately 65°C, manufactured by NOF Corporation)).

[0046] Ingredient (d) Xanthan gum ("GRINSTEAD (registered trademark) Xanthan Clear-80" (manufactured by Danisco Japan Co., Ltd.)), gellan gum ("Kelcogel (registered trademark) HM" (manufactured by MP Gokyo Food & Chemical Co., Ltd.)), and sodium hyaluronate ("Hyaluronic Acid Liquid HA-LQH1" (manufactured by Kewpie Corporation)) were used.

[0047] component (d') Carboxyvinyl polymer ("Carbopol (registered trademark) Ultrez 10" (manufactured by Lubrizol Japan, Ltd.)) and acrylic acid / alkyl methacrylate copolymer (acrylates / alkyl acrylate (C10-30)) crosspolymer ("Carbopol (registered trademark) Ultrez 21" (manufactured by Lubrizol Japan, Ltd.))) were used.

[0048] Ingredient (e) Polyethylene glycol monostearate (polyethylene glycol monostearate (stearic acid has 18 carbon atoms, polyethylene glycol added mole number is 75)) ("Nonion S-40") (manufactured by NOF Corporation) was used.

[0049] Component (e') Polyethylene glycol (molar number added: 75) (PEG#4000, manufactured by NOF Corporation) was used.

[0050] <Evaluation method> Each panelist conducting the following evaluations had been trained in a preliminary evaluation test conducted prior to the evaluation test to ensure that the evaluation levels corresponding to each score were roughly consistent, thereby ensuring that there were no differences in evaluation standards between panelists.

[0051] (1) Spreadability when applied The panel consisted of 20 women aged between 25 and 55. After bathing in the evening and using lotion, milky lotion, and cream, they applied a thick layer of approximately 1g of oil-in-water emulsion cosmetic to the entire face and evaluated its spreadability according to the following criteria. 2 points: If you feel it stretches well. 1 point: If you feel that it stretches a little well. 0 point: If you feel that it does not stretch well.

[0052] (2) The feeling of a coating after a while of applying thick paint The panel consisted of 20 women aged between 25 and 55. After bathing in the evening, they used lotion, milky lotion, and cream, and then applied a thick layer of approximately 1g of the oil-in-water emulsion cosmetic to their entire face. After 30 minutes, the feeling of the skin coating was evaluated according to the following criteria. 2 points: If you feel a coating. 1 point: If you feel a slight coating sensation. 0 point: If you feel there is no coating sensation.

[0053] (3) No stickiness even after applying thickly The panel consisted of 20 women aged between 25 and 55. After bathing in the evening, they used lotion, milky lotion, and cream, and then applied a thick layer of approximately 1g of oil-in-water emulsion cosmetic to their entire faces. After 30 minutes, they were asked to evaluate the lack of stickiness using the following criteria. 2 points: If it does not feel sticky. 1 point: There is almost no stickiness. 0 points: If the product feels sticky.

[0054] (4) Moisturizing feeling the next morning The panel consisted of 20 women aged between 25 and 55. After bathing in the evening and using lotion, milky lotion, and cream, they applied a thick layer of approximately 1g of the oil-in-water emulsion cosmetic to their entire faces, and evaluated the moisturizing sensation the following morning according to the following criteria. 2 points: If you feel it is moisturizing. 1 point: If you feel it has a slightly moisturizing effect. 0 points: If you feel there is no moisturizing effect.

[0055] The above items (1) to (4) were evaluated according to the following criteria, and are shown in Tables 1 to 3. "◎" and "◯" were evaluated as acceptable. ◎: Total score is 36 or more ○: Total score is 31 or more and 35 or less △: Total score is 26 or more and 30 or less ×: Total score is 25 or less

[0056] [Table 1]

[0057] [Table 2]

[0058] [Table 3]

[0059] [Table 4]

[0060] All of the oil-in-water emulsion cosmetics of Examples 1 to 27 were judged to pass the criteria for spreadability upon application, film-like feel and non-stickiness some time after thick application, and moisturizing feel the next morning.

[0061] In contrast, in Comparative Examples 1 to 8, sufficient performance was not obtained. Comparative Example 1 did not contain component (b), and therefore was insufficient in terms of spread upon application, film-like feel some time after thick application, and moisturizing feel the next morning. Comparative Example 2 did not contain component (c), and therefore the coating feeling and lack of stickiness some time after thick application, and the moisturizing feeling the next morning were insufficient. Comparative Examples 3 and 4 contained component (d') instead of component (d), and therefore the coating feel was insufficient some time after thick coating. Comparative Example 5 did not contain components (b) and (d), and therefore the spread upon application, the film-like feel and lack of stickiness some time after thick application, and the moisturizing feel the next morning were insufficient. Comparative Example 6 did not contain components (c) and (d), and therefore the coating feel and lack of stickiness after a while after thick application were insufficient. Comparative Example 7 contained component (e') instead of component (e), and therefore the coating feel and lack of stickiness after a while after thick application were insufficient. Comparative Example 8 did not contain component (e), and therefore the coating feel and lack of stickiness even after a while of thick application were insufficient.

Claims

[Claim 1] An oil-in-water emulsion cosmetic comprising 5 to 30 mass% of component (a), 5 to 20 mass% of component (b), 5 to 20 mass% of component (c), 0.001 to 1 mass% of component (d), and 0.1 to 5 mass% of component (e). Component (a): An oil that is liquid at 25°C Component (b): An oil having a melting point of 30 to 50°C Component (c): An oil having a melting point of 60 to 80°C Component (d): Thickening polysaccharide Component (e): Mono-fatty acid polyethylene glycol having a fatty acid carbon number of 12 to 22

Images