JP2018203634A - Oil-in-water emulsion cosmetic - Google Patents

Abstract

To provide an oil-in-water emulsion cosmetic that reduces a slimy feeling during application and stickiness during drying, fits to the skin well, has an improved permeation feeling, softens the skin, and gives a springy feeling and a moisture retention feeling.SOLUTION: An oil-in-water emulsion cosmetic contains the following components (A)-(F): (A) a polyhydric alcohol containing glycosyl trehalose 1-15 mass%, (B) N-acylamino acid diester, (C) fatty acid triglyceride in liquid form, (D) a nonionic surfactant with an HLB of 8-18, (E) phospholipid, (F) water.SELECTED DRAWING: None

Description

  The present invention relates to an oil-in-water emulsified cosmetic.

In recent years, glycosyl trehalose has been studied for its application to cosmetics because it improves the water retention function, cell activation effect, and cell protection effect of the skin, and can feel a moist but non-sticky film feeling after application ( Non-patent document 1).
For example, by using a mixture of glycosyl trehalose / hydrogenated starch degradation product and highly polymerized polyethylene glycol, a topical skin preparation has been proposed that does not cause sliminess or stickiness, gives the skin firmness, and improves skin sagging. (Patent Document 1).

Fragrance Journal Vol.31 No.11 Page.106-113

JP 2010-241743 A

  However, although the external preparation for skin described in Patent Document 1 can suppress the stickiness of the coating film after drying to some extent and produce a firm feeling, it is applied to the skin and blended into the skin with a finger or the like. In some stages, the feeling of sliminess became stronger, and the stickiness when dried could be very strong, leading to a decrease in the overall evaluation of the feeling of use.

  The present invention relates to an oil-in-water emulsified cosmetic that does not feel slimy during application, does not feel sticky when dried, is well-familiar to the skin, has excellent skin firmness and moisturizing feeling, and has excellent storage stability.

  Therefore, as a result of intensive studies, the present inventor has used a polyhydric alcohol containing glycosyl trehalose, an N-acyl acidic amino acid diester, a liquid fatty acid triglyceride, a nonionic surfactant having a specific HLB, a phospholipid, and water. It has been found that an oil-in-water emulsified cosmetic that has excellent storage stability, has a slimy feeling when applied, and has reduced stickiness when dried, is well-familiar to the skin, and gives a firmness and moisturizing feeling. .

The present invention relates to an oil-in-water emulsion cosmetic containing the following components (A) to (F).
(A) a polyhydric alcohol containing 1 to 15% by mass of glycosyl trehalose,
(B) N-acylamino acid diester,
(C) liquid fatty acid triglycerides,
(D) HLB8-18 nonionic surfactant,
(E) phospholipid,
(F) Water

  The oil-in-water emulsified cosmetic of the present invention has a slimy feeling at the time of application and stickiness at the time of drying, is well-familiar to the skin, and can give a firm feeling and a moisturizing feeling. Moreover, it is excellent in storage stability.

  Among the components (A) used in the present invention, in glycosyl trehalose, the glycosyl group directly linked to trehalose can be obtained by losing the hemiacetal hydroxyl group from the sugar molecule, regardless of whether it is a monosaccharide or a polysaccharide. Galactosyl group, maltosyl group, maltotriosyl group, maltotetraosyl group and the like. The glycosyl trehalose is preferably one or more selected from glucosyl trehalose, maltosyl trehalose, maltotriosyl trehalose and maltotetraosyl trehalose, and one selected from glucosyl trehalose, maltosyl trehalose and maltotriosyl trehalose. Or 2 or more types are more preferable.

  A commercial item can be used for these, and specifically Tornere (registered trademark) (glycosyl trehalose / hydrogenated starch decomposition product mixed solution, Hayashibara Co., Ltd.) can be mentioned. Tornale® is a glycosyl trehalose containing glucosyl trehalose, maltosyl trehalose and maltotriosyl trehalose and a hydrogenated starch degradation product containing sorbitol, maltitol, maltotriitol, maltotetritol and maltopentitol. It is an aqueous solution consisting of water and containing 47% by mass of glycosyl trehalose, 27% by mass of hydrogenated starch degradation product and 26% by mass of water.

In the component (A), any polyhydric alcohol other than glycosyl trehalose may be used as long as it is used in ordinary cosmetics. For example, ethylene glycol, propylene glycol, isoprene glycol, 1,3-butylene glycol, 1,3 -Propanediol, hexylene glycol, trimethylolpropane, dipropylene glycol, glycerin, diglycerin, sorbitol, mannitol, glucose, sucrose, fructose, xylitol, lactose, maltitol, trehalose and the like.
Among these, from the viewpoint of improving the familiarity to the skin and suppressing the slimy feeling at the time of application and stickiness at the time of drying, it is preferable to contain a divalent polyhydric alcohol, and propylene glycol, 1,3-butylene glycol. And one or more selected from dipropylene glycol are more preferred. Moreover, it is preferable that a trivalent or tetravalent polyhydric alcohol is included from a viewpoint of improving a firmness and a moisturizing feeling, and 1 type or 2 types selected from glycerol and diglycerol are more preferable. From the viewpoint of achieving both of these, the content ratio of the trivalent or tetravalent polyhydric alcohol to the divalent polyhydric alcohol is preferably 0.6 to 0.9, more preferably 0.7 to 0.88, and 0 More preferred is .75 to 0.85.

  The polyhydric alcohol of the component (A) contains 1 to 15% by mass of glycosyl trehalose in the polyhydric alcohol, improves the firmness and moisturizing feeling, and suppresses the slimy feeling during application and the stickiness when dried Therefore, it is preferable to contain 1.5 to 12% by mass, more preferably 2.0 to 8% by mass, and still more preferably 2.0 to 6% by mass.

  The content of the component (A) is preferably 5% by mass or more in the total composition from the viewpoint of improving the familiarity to the skin, the firmness, and the moisturizing feeling, and suppressing the slimy feeling during application and stickiness when dried. 7 mass% or more is more preferable, 9 mass% or more is more preferable, 21 mass% or less is preferable, 18 mass% or less is more preferable, and 15 mass% or less is further more preferable. Moreover, 5-21 mass% is preferable in the whole composition, as for content of a component (A), 7-18 mass% is more preferable, and 9-15 mass% is further more preferable.

  The acyl amino acid ester of component (B) is obtained by condensing an amino acid and an acyl chloride in the presence of an alkali to give an N-acyl amino acid, and then in the presence of a base or an acid, optionally in the presence of a solvent, and dehydration condensation with the corresponding alcohol. Can be manufactured. When an acidic amino acid such as glutamic acid or aspartic acid is used as the amino acid, it has two carboxy groups. Therefore, alcohols having different properties can be combined with each other or mixed together, which is preferable. . That is, as the acyl amino acid ester, N-acyl acidic amino acid diester is preferable. In view of the availability of the product, the amino acid is preferably glutamic acid.

The acyl group of the acylamino acid ester is preferably one having 8 to 30 carbon atoms, and may be saturated or unsaturated. For example, a 2-ethylhexanoyl group, a lauroyl group, a myristoyl group, a palmitoyl group, a stearoyl group, a behenoyl group, an oleoyl group, an isostearoyl group, a linolenoyl group and the like can be preferably exemplified, and a particularly preferred one is a lauroyl group.
The group constituting the ester and derived from the alcohol component may be branched, linear, or cyclic, but is preferably a group having 16 to 36 carbon atoms. For example, an octyl group, a lauryl group, a cetyl group, a stearyl group, an isostearyl group, an octyldecyl group, a behenyl group, an octyldodecyl group, a group derived from an aliphatic alcohol, or a sterol such as a campesteryl group, a sitosteryl group, or a cholesteryl group A group derived from the above can be suitably exemplified. Among them, it is preferable to include a compound having a group derived from at least one sterol, that is, an N-acyl amino acid sterol ester.

  Specific examples of the acyl amino acid ester of component (B) include N-lauroyl-L-glutamate di (cholesteryl / behenyl) from the viewpoint of improving skin familiarity, moisturizing feeling, and suppressing stickiness upon drying. / 2-octyldodecyl), N-lauroyl-L-glutamate di (cholesteryl / 2-octyldodecyl), N-lauroyl-L-glutamate di (phytosteryl / behenyl / 2-octyldodecyl) and N-lauroyl-L-glutamic acid One or more selected from di (phytosteryl / 2-octyldodecyl) are preferred, and N-lauroyl-L-glutamate di (phytosteryl / 2-octyldodecyl) and N-lauroyl-L-glutamate di (phytosteryl / Behenyl / 2-octyldodecyl) One or two that are more preferred.

  In addition, as commercially available products of these components (B), “El Deu PS203” (N-lauroyl-L-glutamate di (phytosteryl / 2-octyldodecyl)), “Erdeu CL-301” (N-lauroyl glutamate di (cholesteryl)) / Behenyl / 2-octyldodecyl)), "Erudu CL-202" (N-lauroyl glutamate di (cholesteryl / 2-octyldodecyl)), "Erudu PS-306" (N-lauroyl glutamate di (phytosteryl / behenyl / 2) -Octyldodecyl)) (made by Ajinomoto Co., Inc.).

A component (B) can be used 1 type or in combination of 2 or more types.
The content of the component (B) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more in the total composition from the viewpoint of improving the familiarity to the skin, the moisturizing feeling, and suppressing stickiness upon drying. More preferably, 1.0 mass% or more is more preferable, 10 mass% or less is preferable, 8 mass% or less is more preferable, and 5 mass% or less is further more preferable. Moreover, 0.1-10 mass% is preferable in the whole composition, content of a component (B) has more preferable 0.5-8 mass%, and 1.0-5 mass% is further more preferable.

Component (C) is a liquid fatty acid triglyceride. In the present invention, a liquid is determined to be a liquid in a liquid-solid determination test according to the American Society for Testing and Materials standard “ASTM D 4359-90: Standard Test Method for Determining Whether a Material is a Liquid or Solid”. Is. Similarly, the solid state is determined to be solid by the same determination test.
The fatty acid triglyceride is preferably a fatty acid triglyceride having one or more constituent fatty acids having 6 to 22 carbon atoms, and from the viewpoint of improving the stability of the composition, the moisturizing feeling, and the softness of the skin, two or more of the constituent fatty acids. Are more preferably those having 6 to 22 carbon atoms, and more preferably those in which all of the constituent fatty acids have 6 to 22 carbon atoms.

  Specific examples of such fatty acid triglycerides include tri (capryl / capric acid) glyceryl, tri (capryl / caprin / myristin / stearic acid) glyceryl, tri-2-ethylhexanoic acid glyceryl, tricaprylic acid glyceryl, triethylhexanoic acid glyceryl, tri Glyceryl stearate, glyceryl triisostearate, glyceryl tripalmitate, glyceryl tri-2-heptylundecanoate, glyceryl tribehenate, glyceryl trimyristate, glyceryl trilaurate, glyceryl trioleate, glyceryl trilinoleate, glyceryl tripallate Is mentioned. These may be triglyceride fatty acid glyceryl, olive oil, Medfoam oil, macadamia nut oil, avocado oil, sea buckthorn oil, rice bran oil, shea butter, and other plant-derived fatty acid triglycerides.

Of these, fatty acid triglycerides containing palmitoleic acid as a constituent unit are preferable, from the viewpoint of improving skin familiarity, moisturizing feeling, and suppressing sliminess during application and stickiness during drying. ) More preferably 3% by mass or more, more preferably 7% by mass or more, and even more preferably 10% by mass or more of fatty acid triglyceride containing palmitoleic acid as a constituent unit.
Further, as a fatty acid triglyceride derived from a plant containing a fatty acid triglyceride containing palmitoleic acid as a constituent unit (in parentheses, a fatty acid triglyceride content containing palmitoleic acid in a vegetable oil as a constituent unit), macadamia nut oil (about 17% by mass), avocado One or more selected from oil (about 4% by mass) and sea buckthorn oil (about 40% by mass) can be suitably used.

A component (C) can be used 1 type or in combination of 2 or more types.
The content of component (C) is 0.1% by mass or more in the oil-in-water emulsified cosmetic from the viewpoint of improving the familiarity to the skin and the moisturizing feeling, and suppressing the slimy feeling during application and stickiness when dried. 0.5 mass% or more is more preferable, 1.0 mass% or more is more preferable, 10 mass% or less is preferable, 8 mass% or less is more preferable, and 5 mass% or less is more preferable. Moreover, 0.1-10 mass% is preferable in the whole composition, as for content of a component (C), 0.5-8 mass% is more preferable, 1.0-5 mass% is further more preferable.

  In the present invention, the total content of component (B) and component (C) is an oil-in-water emulsified cosmetic from the viewpoints of improving moisturizing feeling and firmness, and suppressing sliminess during application and stickiness during drying. 1.0 mass% or more is preferable, 1.5 mass% or more is more preferable, 2.2 mass% or more is further more preferable, 15 mass% or less is preferable, 10 mass% or less is more preferable, 8 mass% or less Is more preferable. The total content of the component (B) and the component (C) is preferably 1.0 to 15% by mass, more preferably 1.5 to 10% by mass in the oil-in-water emulsion cosmetic, and 2.0 to 8 mass% is more preferable.

The HLB of the nonionic surfactant of component (D) is 8 to 18, from the viewpoint of improving the storage stability by improving the familiarity to the skin, suppressing the slimy feeling during application and stickiness during drying. 8-14 are preferable, and 9-11 are more preferable.
HLB (Hydrophile-Lipophile Balance) is an index that represents the ratio of the relative affinity of a surfactant to both liquids in an oil-water system. In the present invention, the HLB value is the HLB value = (Σinorganic value). / Σorganic) × 10. Here, for each of the “inorganic value” and “organic value”, for example, “organic value” is 20 for one carbon atom in the molecule, and “inorganic value” is 100 for one hydroxyl group. As described above, “inorganic value” and “organic value” corresponding to various atoms or functional groups are set, and “inorganic value” and “organic value” of all atoms and functional groups in the organic compound. Is calculated to calculate the IOB value of the organic compound (for example, Yoshio Koda, “New Edition Organic Conceptual Diagram: Basics and Applications”, pages 3 to 17, pages 95 to 102, Sankyo Publishing, 1984) reference).

The nonionic surfactant of component (D) is one that is used in ordinary cosmetics. For example, polyoxyethylene alkyl ether, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene glycerin fatty acid ester And polyoxyethylene glycol type nonionic surfactants such as polyoxyethylene hydrogenated castor oil; glycerin fatty acid ester, polyglycerin fatty acid ester, mono fatty acid sorbitan, sucrose fatty acid ester and the like.
Of these, polyglycerin fatty acid esters are preferred from the viewpoints of improving storage stability, improving skin familiarity and firmness, and suppressing sliminess during application and stickiness during drying.

The average degree of glycerin polymerization of the polyglycerin fatty acid ester is preferably 2 or more, more preferably 3 or more, and preferably 15 or less, from the viewpoint of improving the storage stability and the familiarity with the skin. The following is more preferable.
The constituent fatty acid of the polyglycerin fatty acid ester may be either saturated or unsaturated, and from the viewpoint of improving the storage stability, familiarity with the skin, good tension, and 10 or more, preferably 16 or more. Is more preferable, 22 or less is preferable, and 20 or less is more preferable.

  Specific examples of the polyglycerol fatty acid ester include polyglyceryl stearate-3 (HLB: 9.3), polyglyceryl stearate-4 (HLB: 10.3), and polyglyceryl-6 stearate (HLB: 11.9). , Polyglyceryl-10 stearate (HLB: 14.0), polyglyceryl-10 distearate (HLB: 9.8), polyglyceryl-10 diisostearate (HLB: 10.0), polyglyceryl-10 oleate (HLB: 14. 0), polyglyceryl-10 isostearate (HLB: 14.1), polyglyceryl-10 myristate (HLB: 15.2), polyglyceryl-10 laurate (HLB: 16.0), and the like. Of these, polyglyceryl-3 stearate (HLB: 9.3), stearic acid from the viewpoint of improving the familiarity to the skin, suppressing the slimy feeling at the time of application, stickiness at the time of drying, and improving the storage stability Polyglyceryl-4 (HLB: 10.3), polyglyceryl stearate-6 (HLB: 11.9), polyglyceryl stearate-10 (HLB: 14.0), polyglyceryl-10 distearate (HLB: 9.8), It is preferable to include one or more selected from polyglyceryl-10 diisostearate (HLB: 10.0) and polyglyceryl-10 oleate (HLB: 14.0), polyglyceryl-3 stearate (HLB: 9) .3), polyglyceryl stearate-4 (HLB: 10.3), polyglyceryl distearate Lil -10 (HLB: 9.8) and polyglyceryl diisostearate -10 (HLB: 10.0) and more preferably contains one or more selected from.

A component (D) can be used 1 type or in combination of 2 or more types.
In the present invention, the HLB when two or more nonionic surfactants are used in combination is a value obtained by weighted average of the HLBs of individual compounds.

The content of the component (D) is 0.05% in the total composition from the viewpoint of improving storage stability, improving the familiarity with the skin and feeling of firmness, and suppressing slimy feeling during application and stickiness when dried. % By mass or more is preferable, 0.1% by mass or more is more preferable, 0.5% by mass or more is more preferable, 3% by mass or less is preferable, 2% by mass or less is more preferable, and 1.5% by mass or less is more preferable. . Moreover, 0.05-3 mass% is preferable in the whole composition, as for content of a component (D), 0.1-2 mass% is more preferable, 0.5-1.5 mass% is further more preferable.
When the polyglycerin fatty acid ester is contained in the component (D), the content of the polyglycerin fatty acid ester in the component (D) improves the storage stability, improves the familiarity with the skin and the firmness, From the viewpoint of suppressing the feeling of slimness and stickiness at the time of drying, 50% by mass or more is preferable, 80% by mass or more is more preferable, 90% by mass or more is further preferable, and 100% by mass or less is preferable.

  As the phospholipid of component (E), the phosphatidylcholine content is 60% by mass or more, further 62% by mass or more, and further 65 from the viewpoint of improving storage stability, suppressing stickiness and improving familiarity to the skin. What is mass% or more is preferable. Moreover, the thing whose phosphatidylcholine content is 98 mass% or less is preferable. Examples of phospholipid components other than phosphatidylcholine include phosphatidic acid, phosphatidylserine, phosphatidylethanolamine, phosphatidylinositol, and phosphatidylglycerol.

The phospholipid of component (E) may be a natural product extracted and purified from animals and plants, or may be chemically synthesized, or may be subjected to processing such as hydrogenation or hydroxylation. . As a natural product, lecithin, which is an extract / purified product from soybean or egg yolk, is preferable from the viewpoint of improving storage stability and reducing skin irritation, and more preferably hydrogenated or hydroxylated.
Specifically, soybean lecithin hydrogenated product and egg yolk lecithin hydrogenated product are preferably exemplified.

  The content of phosphatidylcholine in the phospholipid can be analyzed by a method using thin layer chromatography (TLC), high performance liquid chromatography (HPLC), Iatroscan (manufactured by Yatron) or the like. For example, an organic solvent containing a phospholipid described in JP-A-2001-186898 is spotted on TLC, developed in chloroform: methanol: acetic acid = 65: 25: 10, sprayed with 50% by mass ethanol sulfate, and heated. A method of analyzing phospholipids with a post densitometer is mentioned. In addition to the above method, any method may be used as long as it can measure and calculate the content and content of phosphatidylcholine contained in the phospholipid.

  Examples of phospholipids containing 60% by mass or more of phosphatidylcholine include coatsome NC-21 (hydrogenated soybean lecithin; manufactured by NOF Corporation), resinol S-10E, and resinol S-10EX (hydrogenated soybean lecithin; Nikko Chemicals). And Phospholipid PCSH70 (hydrogenated soybean lecithin; manufactured by Nippon Seika Co., Ltd.).

A component (E) can be used 1 type or in combination of 2 or more types.
Component (E) content is 0.01% by mass or more in the total composition from the viewpoint of improving the storage stability, improving the familiarity with the skin, and suppressing the slimy feeling at the time of application and stickiness at the time of drying. Is preferable, 0.05 mass% or more is more preferable, 0.1 mass% or more is more preferable, 3 mass% or less is preferable, 2 mass% or less is more preferable, and 1 mass% or less is more preferable. Moreover, 0.01-3 mass% is preferable in the whole composition, as for content of a component (E), 0.05-2 mass% is more preferable, 0.1-1 mass% is further more preferable.

  In the present invention, the water content of the component (F) is preferably 55% by mass or more, preferably 60% by mass or more in the total composition from the viewpoint of improving the familiarity with the skin and improving the moisturizing feeling and storage stability. Is more preferable, 65 mass% or more is further preferable, 90 mass% or less is preferable, 88 mass% or less is more preferable, and 85 mass% or less is further more preferable. Moreover, 55-90 mass% is preferable in the whole composition, and, as for content of the water of a component (F), 60-88 mass% is more preferable, and 65-85 mass% is further more preferable.

  In the present invention, the mass ratio of the component (B) to the total oil agent ((B) / total oil agent) is from the viewpoint of improving the familiarity to the skin and suppressing the slimy feeling at the time of application and the stickiness at the time of drying. 005 or more is preferable, 0.01 or more is more preferable, 0.05 or more is more preferable, 1.0 or less is preferable, 0.6 or less is more preferable, and 0.35 or less is more preferable. Further, the mass ratio of the component (B) to the total oil agent ((B) / total oil agent) is preferably 0.005 to 1.0, more preferably 0.01 to 0.6, and 0.05 to 0.35. Is more preferable.

  The oil-in-water emulsion cosmetic of the present invention can further contain (G) a water-soluble polymer from the viewpoint of improving storage stability. The water-soluble polymer may be any of a natural water-soluble polymer, a semi-synthetic or synthetic water-soluble polymer, and an inorganic water-soluble polymer. Among these water-soluble polymers, natural water-soluble polymers include alginate, carrageenan, xanthan gum, agar, guar gum, quince seed, locust bean gum, chitosan, hyaluronic acid or a salt thereof, gelatin and the like. Examples of the semi-synthetic water-soluble polymer include alkyl celluloses such as methyl cellulose and ethyl cellulose, and hydroxyalkyl celluloses such as hydroxymethyl cellulose, hydroxyethyl cellulose, and hydroxypropyl cellulose. Examples of the synthetic water-soluble polymer include acrylic water-soluble polymers such as carboxyvinyl polymer and alkyl-modified carboxyvinyl polymer. These water-soluble polymers can be used alone or in combination of two or more.

Component (G) is a carboxyvinyl polymer, acrylic acid / alkyl methacrylate copolymer, xanthan gum, carrageenan, hydroxypropylmethylcellulose, polyacrylamide, (acrylic), from the viewpoint of improving storage stability and suppressing stickiness to the skin. Acid Na / acryloyldimethyltaurine Na) copolymer and one or more selected from hyaluronic acid or alkali metal salts thereof, preferably carboxyvinyl polymer, acrylic acid / alkyl methacrylate copolymer, xanthan gum, carrageenan And one or more selected from hyaluronic acid or alkali metal salts thereof, carboxyvinyl polymer, acrylic acid / alkyl methacrylate copolymer, xanthan gum and hyaluronic acid More preferably one or two or more are selected from the alkali metal salts thereof.
In addition, since the carboxyvinyl polymer and the acrylic acid / alkyl methacrylate copolymer have a property of thickening by neutralization with a base, it is preferably neutralized with a base and present as a salt. Examples of the base include alkali metal hydroxides such as sodium and potassium; ammonium; ammonium derived from alkanolamines such as monoethanolamine, diethanolamine, triethanolamine and tromethamine; and basic amino acids such as arginine and lysine. Alkali metal hydroxides such as potassium are preferred, and potassium hydroxide and sodium hydroxide are more preferred.

  The content of the component (G) is not particularly limited, but is 0.05% by mass or more in the oil-in-water emulsion cosmetic from the viewpoint of improving storage stability and suppressing stickiness to the skin. Is preferable, 0.1% by mass or more is more preferable, 0.2% by mass or more is more preferable, 3% by mass or less is preferable, 1% by mass or less is more preferable, and 0.5% by mass or less is more preferable. Further, the content of the component (G) is preferably 0.05 to 3% by mass, more preferably 0.1 to 1% by mass, and 0.2 to 0.5% by mass in the oil-in-water emulsion composition. Further preferred.

  The oil-in-water emulsified cosmetic of the present invention is a component other than the above-described components, for example, a liquid oil other than components (B) and (C), a solid oil, and an interface other than component (D). Used in normal cosmetics such as activators, salts, chelating agents, pH adjusters, antioxidants, preservatives, bactericides, antiperspirants, cooling agents, UV absorbers, drugs, fragrances, and various extracts. Various raw materials can be contained. Each of these agents is not limited to the use as each agent. Depending on the purpose, for example, an antiperspirant may be used as a fragrance, or as a combination with other uses, for example, an antiperspirant. And can be used as an effect as a fragrance.

  The oil-in-water emulsified cosmetic of the present invention contains an anionic surfactant, a cationic surfactant, and an amphoteric surfactant as surfactants other than the component (D) from the viewpoint of further improving storage stability. However, from the viewpoint of maintaining good skin familiarity and suppressing skin irritation, the oil-in-water emulsion cosmetic is preferably 1.0% by mass or less, more preferably 0.5% by mass or less, 0.1 mass% or less is further more preferable, and it is still more preferable not to contain substantially.

  From the viewpoint of further improving the moisturizing feeling, the oil-in-water emulsion cosmetic of the present invention is a liquid hydrocarbon such as squalane, α-olefin oligomer, liquid paraffin, hydrogenated isobutene, liquid fatty acid such as isostearic acid, dimethicone, phenyltri Liquid oils other than components (B) and (C) such as liquid silicone oil such as methicone can be contained. The content of the liquid oil other than the components (B) and (C) is 0 in the oil-in-water emulsified cosmetic from the viewpoint of improving the familiarity to the skin and suppressing the slimy feeling at the time of application and the stickiness at the time of drying. 0.1 mass% or more is preferable, 0.5 mass% or more is more preferable, 15 mass% or less is preferable, and 12 mass% or less is more preferable. From the viewpoint of further enhancing the refreshing feel, 8% by mass or less is more preferable, and 5% by mass or less is more preferable.

  The oil-in-water emulsified cosmetic of the present invention is a solid oil such as jojoba oil, waxes such as shea butter, sterols such as cholesterol and phytosterol, solid hydrocarbons such as microcrystalline wax, etc. Can be contained. The content of the solid oil is preferably 0.1% by mass or more in the oil-in-water emulsified cosmetic from the viewpoint of improving the familiarity to the skin, and suppressing the slimy feeling at the time of application and stickiness at the time of drying. More preferably 3% by mass or more, 8% by mass or less, more preferably 6% by mass or less. From the viewpoint of further enhancing the refreshing feel, it is more preferably 3% by mass or less, and further preferably 1% by mass or less.

The oil-in-water emulsified cosmetic of the present invention can be produced by a predetermined procedure depending on the form. For example, Step 1 of heating an oil phase component containing the components (B) to (E) and, if necessary, any other oil component and stirring to obtain a preparation;
Heating the aqueous phase containing component (A), component (F), and optionally component (G), and other optional aqueous components, and stirring to obtain a preparation; and
Step 3 for obtaining an emulsion by uniformly dispersing the preparation obtained in Step 1 and the preparation obtained in Step 2 under heating, and the emulsion obtained in Step 3 at room temperature (25 ° C.) It can manufacture by the method including the process 4 cooled to.

In addition, when the component (G) contains a carboxyvinyl polymer and an acrylic acid / alkyl methacrylate copolymer, the carboxyvinyl polymer, acrylic acid / alkyl methacrylate is added from the viewpoint of increasing the viscosity when neutralized and applying a load to the mixing process. It is preferable to add the copolymer as a post-process. For example, the step 1 ′ of heating the oil phase component containing the components (B) to (E) and optionally any other oil component and stirring to obtain a preparation;
Heat and stir the aqueous phase containing component (A), component (F), and optionally carboxyvinyl polymer, component (G) other than acrylic acid / alkyl methacrylate copolymer, and other optional aqueous components. Obtaining a preparation 2 ';
Step 3 ′ to obtain an emulsion by uniformly dispersing the preparation obtained in Step 1 ′ and the preparation obtained in Step 2 ′ under heating, and cooling the emulsion obtained in Step 3 ′ Then, carboxyvinyl polymer, acrylic acid / alkyl methacrylate copolymer, and base are added within a temperature range of 30 to 50 ° C., and stirred to obtain a preparation. It can be manufactured by a method including a step 5 ′ of cooling an object to room temperature (25 ° C.).

The heating temperature in step 1, step 2 and step 3, or step 1 ′, step 2 ′ and step 3 ′ is preferably 40 ° C. or more, more preferably from the viewpoint of sufficiently dissolving the components in the oil phase or water phase. Is 55 ° C. or higher, preferably 90 ° C. or lower, more preferably 85 ° C. or lower.
The temperature at which the carboxyvinyl polymer, the acrylic acid / alkyl methacrylate copolymer, and the base in Step 4 ′ are added is within the range of 30 ° C. or higher and 50 ° C. or lower from the viewpoint of reducing the load in the mixing step. The temperature is preferably 5 ° C. or more lower than the heating temperature in Step 1, Step 2 and Step 3, or Step 1 ′, Step 2 ′ and Step 3 ′, and more preferably 10 ° C. or more.

The oil-in-water emulsified cosmetic of the present invention is suitable for use as a skin cosmetic because it has a slimy feeling during application and stickiness when dried, is well-familiar to the skin, and gives a firmness and moisturizing feeling. Preferably, it can be used by applying it to the skin excluding the scalp, more preferably to any of the face, body, limbs and the like.
The dosage form of the oil-in-water emulsified cosmetic of the present invention is arbitrary, and can be applied as a lotion, milky lotion, cosmetic liquid, cream, base material and the like.

Examples 1-15, Comparative Examples 1-10
Manufacture oil-in-water emulsified cosmetics as shown in Tables 1 and 2 and evaluate their goodness to skin, lack of sliminess when applied, no stickiness when dry, firmness, moisturizing feeling and storage stability did. The results are shown in Table 1 and Table 2 together.

〔Production method〕
1. Components 1 to 11 (preparation a) and components 12 to 22 (preparation b) are dissolved by heating at 80 ° C., and mixed with stirring.
2. Add Preparation a while stirring Preparation b.
3. The preparation of Step 2 is dispersed with a homomixer (5,000 rpm, 3 minutes) and then cooled.
After cooling to 4.50 ° C., components 23 and 24 are added and dispersed again with a homomixer (5,000 rpm, 3 minutes).
5. The preparation of Step 4 was cooled to 32 ° C. to obtain an oil-in-water emulsion cosmetic.

〔Evaluation method〕
(1) Good familiarity to skin, no sliminess when applied, no stickiness when dry, firmness, moisturizing feeling:
Ten professional panelists applied 1 mL of each cosmetic on the inner side of the upper arm, spread it over the entire application area, and applied it carefully until the hand slipped. After that, questionnaire evaluation was conducted on “good skin fit”, “no sliminess when applied”, “no stickiness when dried”, “feeling firm” and “moisturizing”. For each questionnaire item, sensory evaluation was performed by a five-step evaluation, with 5 points when the effect was very excellent and 1 point when the effect was very poor. The results are shown as the average score (rounded to the second decimal place) of 10 professional panelists.

(2) Storage stability:
Samples were placed in glass bottles, and each sample was stored in a constant temperature bath at 60 ° C. for 1 month. Based on the state immediately after production, the appearance change after one month was determined based on the following criteria by visual observation and observation with an optical microscope (measurement magnification: 100 times, manufactured by Nikon (model number ECLIPSE LV100POL)).
(Criteria)
O: No change in appearance is observed in both visual observation and observation with a microscope.
(Triangle | delta): Although the external appearance change was not recognized by observation by visual observation, coalescence of the emulsification particle | grains was recognized by the observation by the microscope as a whole.
X: Appearance change (oil floating, separation, creaming, etc.) is observed by visual observation

  Hereinafter, prescription examples of the present invention will be described. Both have the same effects as the embodiment.

Example 16 (O / W type cream)
Raw material component amount (% by mass)
1. Behenyl alcohol 1.5
2. Stearic acid 2.5
3. Sara honey bee 1.0
4). Glyceryl monostearate 2.0
5. Polyglyceryl diisostearate-10 (* 5) 1.0
6). White petrolatum 0.5
7). POE (20) sorbitan oleate 0.5
8). POE (20) sorbitan stearate 1.0
9. Hydrogenated soybean phospholipid (* 6) 0.1
10. Cholesterol 0.05
11. Glyceryl triisostearate 1.0
12 α-olefin oligomer 8.0
13. Macadamia nut oil 2.0
14 N-lauroyl-L-glutamine sanji (phytosteryl 2-octyldodecyl) (* 3) 2.0
15. Dimethicone (5CS) 2.0
16. Dimethicone (1 million CS) 0.1
17. Purified water residue 18. Concentrated glycerin 3.0
19. Diglycerin 5.0
20. Glycosyl trehalose / hydrogenated starch degradation product mixed solution (* 1)
2.0
21. Xanthan gum 0.1
22. Hyaluronic acid Na 0.05
23. EDTA 0.05
24. Chlorphenesin 0.15
25. Phenoxyethanol 0.4
26. Fragrance 0.1
27. Seaweed extract (1) 0.1
28. Perilla leaf extract 0.1
29. Ashitaba leaf / stem extract 0.1
30. Honeysuckle Flower Extract 0.1
31. Melia azadiracta leaf extract 0.1
32. Altea Root Extract 0.5
Total 100

[Production method]
(1) 1-16 and 17-24 are each heated and dissolved at 80 ° C.
(2) Add 17-24 to 1-16 and emulsify and disperse with a homomixer (5,000 rpm, 3 minutes).
(3) Cool (2) to 70 ° C., add 25 and 26, and disperse with a homomixer (5,000 rpm, 1 minute).
(4) Cool (3) to 50 ° C., add 27 to 32, and disperse with a homomixer (5,000 rpm, 1 minute).
(5) Cool (4) to 30 ° C. to obtain an O / W cream.

Example 17 (Cosmetic liquid)
Raw material component amount (% by mass)
1. Purified water residue 2. EDTA 0.02
3. Glycosyl trehalose / hydrogenated starch degradation product mixed solution (* 1) 1.5
4). Polyethylene glycol 1500 0.5
5. Xanthan gum 0.1
6). Carboxyvinyl polymer 0.05
7). Alkyl (C10-30) modified carboxyvinyl polymer 0.1
8). Concentrated glycerin 2.0
9. Ethanol 5.0
10. Hydrogenated soybean phospholipid (* 6) 0.02
11. Phytosterol 0.015
12 POE (60) hardened castor oil 0.15
13. POE (20) sorbitan laurate 0.1
14 N-lauroyl-L-glutamine sanji (phytosteryl 2-octyldodecyl) (* 3) 0.5
15. Avocado oil 0.3
16. Sea buckthorn oil 0.2
17. Phenyltrimethicone 1.0
18. Fragrance 0.01
19. Potassium hydroxide appropriate amount20. Phenoxyethanol 0.3
21. Seaweed extract (1) 0.1
28. Honeysuckle Flower Extract 0.1
29. Ashitaba leaf / stem extract 0.1
30. Tencha extract 0.1
31. Licorice leaf extract 0.1
32. Methylserine 0.1
33. Clove extract 0.2
34. Ghetto Leaf Extract 0.2
35. Elderberry extract 0.05
Total 100

[Production method]
(1) 1-9 are heated to 40 ° C and dissolved, and then cooled to 30 ° C.
(2) Stir 10-18 until uniform at room temperature.
(3) Add (2) to (1) and emulsify and disperse with a homomixer (5,000 rpm, 3 minutes).
(4) 19 to 35 are added to (3) and dispersed with a homomixer (5,000 rpm, 5 minutes) to obtain a cosmetic solution.

  In addition, the fragrance | flavor used by the said prescription example is the following floral system mixing | blending fragrance | flavor prescription. In addition, 1% DPG, 5% DPG, and 10% DPG described in the component names are dipropylene glycol solutions having an active ingredient content of 1% by mass, 5% by mass, and 10% by mass, respectively. Show.

Floral-based blended fragrance formulation (component) Content (mass%)
Bergamot oil (natural fragrance) 2.0
Linarel Acetate 1.5
Methyl anthranilate 0.2
Pettigrain oil (natural flavor) 0.5
Auranthiol 10% DPG (Schiff base of hydroxycitronellal and methylanthranilate) 1.0
Amyl allyl glycolate 1% DPG 0.5
Galvanum oil 1% DPG (natural fragrance) 0.1
Blackcurrant Buzz Absolute 10% DPG (natural fragrance) 1.5
Tadget oil 10% DPG (natural fragrance) 0.8
Ylang Ylang Oil Extra (natural fragrance) 2.0
Benzyl acetate 5.0
Methyl dihydrojasmonate 13.0
Sis Jasmon 10% DPG 1.0
Jasmine absolute (natural fragrance) 0.5
Indole 5% DPG 0.5
Alphahexyl cinnamic aldehyde 1.5
L-citronellol 0.5
Rose oil (natural fragrance) 0.5
Rose Absolute (natural fragrance) 0.5
Damasenone 1% DPG 0.5
L-rose oxide 1% DPG 0.5
Dimethylbenzyl carbonyl acetate 1.0
Hydroxycitronellal 3.0
Liral (compound name: 4- (4-hydroxy-4-methylpentyl) -3-cyclohexene-1-carboxaldehyde) 3.5
Cyclamenaldehyde (Compound name: 2-methyl-3- (4-isopropylphenyl) -propanol) 0.5
Alpha isomethyl ionone (compound name: 5- (2,2,6-trimethyl-2-cyclohexenyl) -3-methyl-3-buten-2-one) 4.0
Oris concrete 10% DPG (natural fragrance) 0.8
Methyl eugenol 0.5
Iso-E super (compound name: 7-acetyl-1,2,3,4,5,6,7,8-octahydro-1,1,6,7-tetramethylnaphthalene) 2.5
Belt Fix Cool (compound name: 4-acetyl-trimethyl-6,8α-ethano-1,2,3,5,6,7,8,8α-octahydronaphthalenone) 4.0
Vetiver Acetate 2.0
Sandalwood oil (natural fragrance) 1.5
Bagdanol 10% DPG (Compound name: 2-ethyl-4- (2,2,3-trimethyl-3-cyclopenten-1-yl) -2-buten-1-ol) 1.0
Patchouli oil 10% DPG (natural fragrance) 0.2
Evernil 10% DPG (Compound name: Methyl-2,4-dihydroxy-3,6-dimethylbenzoate) 1.5
Galac Solid 50% Benzyl Benzoate (Compound name: 4,6,6,7,8,8-hexamethyl-1,3,4,6,7,8-hexahydrocyclopentabenzopyran)
10.0
Cyclopentadecanolide 4.0
Heliotropin 0.5
Coumarin 0.5
Vanillin 10% DPG 0.5
Ethyl vanillin 10% DPG 2.5
Raspberry ketone 10% DPG (compound name: 4- (4-hydrophenyl) -2-butanone) 0.5
Gamma undecalactone 10% DPG 1.5
Gamma Decalactone 10% DPG 1.5
Love Danum Absolute 10% DPG (natural fragrance) 0.5
Dipropylene glycol remaining amount

Claims (5)

An oil-in-water emulsified cosmetic containing the following components (A) to (F).
(A) a polyhydric alcohol containing 1 to 15% by mass of glycosyl trehalose,
(B) N-acylamino acid diester,
(C) a fatty acid triglyceride that is liquid at 25 ° C.,
(D) HLB8-18 nonionic surfactant,
(E) phospholipid,
(F) Water   The oil-in-water emulsified cosmetic according to claim 1, wherein the total content of the component (B) and the component (C) is 1 to 15% by mass.   The oil-in-water emulsified cosmetic according to claim 1 or 2, wherein the component (C) contains a fatty acid triglyceride having palmitoleic acid as a structural unit.   The oil-in-water emulsion cosmetic according to any one of claims 1 to 3, wherein the component (C) is one or more selected from macadamia nut oil, avocado oil and sea buckthorn oil.   The oil-in-water emulsion cosmetic according to any one of claims 1 to 4, wherein the mass ratio of the component (B) to the total oil agent ((B) / total oil agent) is 0.005 to 1.0.