JP7425861B2 - Oil-in-water emulsion cosmetics - Google Patents

Description

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

In recent years, the purposes for which women use skin care cosmetics have diversified, and in addition to moisturizing cosmetics, there are also cosmetics for whitening, brightening, reducing spots and wrinkles, and giving a sense of firmness. Cosmetics are widely accepted. Among these, whitening and brightening are desired effects regardless of age, and many products containing various whitening active ingredients have been proposed. Originally, the whitening effect of active ingredients appears gradually through long-term continuous use of cosmetics containing active whitening ingredients, and it is difficult to feel an immediate whitening effect immediately after applying the cosmetic.

Therefore, in order to create an immediate skin brightening effect instead of an immediate whitening effect, white pigments or powders such as titanium oxide or zinc oxide are used to impart whiteness and brightness to the cosmetic film. There is a method called.

Special Publication No. 2005-526781

The main object of the present invention is to provide an oil-in-water emulsion cosmetic that can instantly produce an effect that brightens the skin and provides an excellent glossy finish.

By the way, a skin care cosmetic called vanishing cream has been known for a long time. As the name suggests, vanishing cream is an oil-in-water emulsion that looks like "vanish" and is applied to the skin. At first, it becomes white and gives a moderate feeling of frictional resistance, but it penetrates and disappears, and is characterized by a refreshing matte finish (see, for example, Patent Document 1). Many vanishing creams contain higher fatty acids and higher alcohols, but when a large amount of these solid surfactants (auxiliaries) are blended, the interface of the emulsified droplets becomes hard, improving the stability of the emulsion, but it does not vanish. (It does not disappear), so it tends to leave a white residue, lose the luster or penetration feeling on the skin, and leave a hard filmy feeling.

As a result of extensive research in order to solve the above problems, the present inventor focused on the white residue when applying vanishing cream, and as a result of further intensive research, the inventor discovered that an anionic surfactant, an anionic surfactant with a carbon number of 12 to 22, We have discovered that the above problems can be solved by creating an oil-in-water emulsion cosmetic that is formulated with at least four ingredients in combination: a higher alcohol, an oil agent with a water-holding capacity of 140% or more relative to its own weight, and a phenyl-modified silicone. , completed the invention. Furthermore, the present inventors have also discovered that even without including a white pigment in the oil-in-water emulsion cosmetic of the present invention, it is possible to produce an effect that instantly brightens the skin. Furthermore, as a more preferable aspect, the present inventors are also able to provide an oil-in-water emulsion cosmetic that instantly produces the effect of brightening the skin and provides an excellent glossy finish with a soft cosmetic film. I found it.

That is, the present invention provides the following components (A) to (D):
(A) Anionic surfactant (B) Oil agent with a water-holding capacity of 140% or more relative to its own weight (C) Phenyl-modified silicone (D) Oil-in-water emulsion cosmetic containing a higher alcohol having 12 to 22 carbon atoms It is.

The component (A) may contain one or more selected from fatty acid salts, N-acylmethyltaurine or salts thereof, and N-acyl amino acids or salts thereof.
The component (B) is phytosteryl oleate, macadamia nut oil fatty acid phytosteryl, N-lauroyl-L-glutamate di(phytosteryl 2-octyldodecyl), hexa(12-hydroxystearic acid/stearic acid/rosin acid) dipentaerythrityl, hydroxy It may contain one or more selected from cholesteryl stearate.
The component (C) may contain one or more selected from diphenyl dimethicone and diphenylsiloxyphenyl trimethicone.
The component (D) may contain one or more selected from cetostearyl alcohol and behenyl alcohol.
Furthermore, the component (E) may contain one or more selected from L-ascorbic acid 2-glucoside, niacinamide, and tranexamic acids.
The content of the component (D) may be less than 10% by mass.

The oil-in-water type emulsified cosmetic composition of the present invention can provide an oil-in-water type emulsified cosmetic composition that can instantly produce the effect of brightening the skin and has an excellent glossy finish. Note that the effects of the present invention are not necessarily limited to the effects described herein, and may be any of the effects described herein.

Hereinafter, preferred embodiments for carrying out the present invention will be described in detail. The embodiments described below are examples of typical embodiments of the present invention. The scope will not be construed narrowly. In this specification, percentages are expressed by mass unless otherwise specified. Furthermore, the upper limit (or less) and lower limit (or more) of each numerical range (~) can be arbitrarily combined as desired.

<1. Oil-in-water emulsion cosmetic of the present invention>
The present invention provides the following components (A) to (D):
(A) Anionic surfactant (B) Water-retaining oil having a water-retaining capacity of 140% or more relative to its own weight (C) Phenyl-modified silicone (D) Containing or blending with a higher alcohol having 12 to 22 carbon atoms , an oil-in-water emulsion cosmetic can be provided. It is also possible to provide a composition in which a brightening component (E) is further blended with the above (A) to (D).

<1-1. Component (A) Anionic surfactant>
The component (A) anionic surfactant used in the present invention is not particularly limited as long as it is commonly used in cosmetics. A commercially available product may be used.

The anionic surfactant (A) may be, for example, a soap base, a fatty acid salt (preferably a higher fatty acid salts); Higher alkyl sulfate ester salts such as Na lauryl sulfate and K lauryl sulfate; Alkyl ether sulfate ester salts such as POE lauryl sulfate triethanolamine and POE Na lauryl sulfate; N-acyl sarcosinates such as Na lauroyl sarcosine; N - Myristoyl-N-methyltaurine Na, coconut oil fatty acid methyltaurine Na, N-acylmethyltaurine such as stearoylmethyltaurine Na, or higher fatty acid amidosulfonic acid or its salt such as its salt; POE oleyl ether phosphate Na, POE stearyl Phosphate ester salts such as ether phosphoric acid; Sulfosuccinates such as Na di-2-ethylhexyl sulfosuccinate, Na lauroyl ethanolamide polyoxyethylene sulfosuccinate, Na lauryl polypropylene glycol sulfosuccinate; Na linear dodecylbenzenesulfonate, linear dodecyl Alkylbenzenesulfonic acid salts such as triethanolamine benzenesulfonic acid and linear dodecylbenzenesulfonic acid; Higher fatty acid ester sulfate ester salts such as hydrogenated coconut oil fatty acid glycerol sodium sulfate; Acylglutamic acid or its salts such as lauroylglutamic acid, stearoylglutamic acid, myristoylglutamic acid, etc. Acylamino acids (also referred to as N-acylamino acids) or their salts (e.g. Na); α-olefin sulfonates, higher fatty acid ester sulfonates, secondary alcohol sulfate ester salts, higher fatty acid alkylolamide sulfate ester salts, Examples include sodium lauroyl monoethanolamide succinate, ditriethanolamine palmitoylaspartate, and sodium caseinate. One or more selected from these can be used as appropriate.

The number of carbon atoms in the "higher fatty acid" or "alkyl" in component (A) is not particularly limited, but its lower limit is preferably 10 or more, more preferably 12 or more; A suitable upper limit is preferably 24 or less carbon atoms, more preferably 22 or less carbon atoms, more preferably 12 to 24 carbon atoms, and even more preferably 12 to 22 carbon atoms. The "higher fatty acid" or "alkyl" may be linear, branched, or cyclic, but preferably linear, and may be either saturated or unsaturated fatty acid, but saturated fatty acid is preferable.

The N-acylmethyltaurine is not particularly limited, but preferably coconut oil fatty acid methyltaurine, N-caproylmethyltaurine, N-lauroylmethyltaurine, N-myristoylmethyltaurine, N-palmitoylmethyltaurine, N-stearoylmethyl One or more types selected from taurine, N-oleoylmethyltaurine, etc., and among these, N-stearoylmethyltaurine is more preferable.

The "acyl" of the N-acyl amino acid is not particularly limited, but is preferably derived from the "fatty acid" of the "fatty acid salt" or a mixed fatty acid thereof, and is preferably derived from a straight chain fatty acid or a mixed fatty acid of straight chain fatty acids. It is more preferable to have 12 to 24 carbon atoms, more preferably 12 to 22 carbon atoms.

Examples of the acyl group in the N-acyl amino acid include linear or branched aliphatic acyl groups having 8 to 24 carbon atoms (preferably 12 to 22 carbon atoms). More specifically, the acyl group includes, for example, an ocapryloyl group, a lauroyl group, a myristoyl group, a palmitoyl group, a stearoyl group, a cocoyl group, a coconut oil fatty acid acyl group (an acyl group derived from coconut oil fatty acid), and a palm fatty acid acyl group. (acyl group derived from palm oil fatty acid), and one or more selected from these are preferred, and among these, a stearoyl group is more preferred.
Furthermore, the "amino acid" moiety of the acylamino acid is not particularly limited, but one or more selected from glutamic acid, aspartic acid, etc. are preferable, and among these, glutamic acid is preferable. Further, the amino acid is preferably in the L form.

Among the N-acyl amino acids, N-acylglutamic acid or a salt thereof is more preferred, and among these, N-stearoyl-L-glutamic acid is even more preferred.
Note that the N-acyl amino acid can be obtained by a known production method, for example, by condensing a chloride of a higher fatty acid and an amino acid (preferably glutamic acid).

Here, the "salt" used in the present invention includes inorganic salts such as alkali metal salts such as sodium and potassium salts, alkaline earth metal salts such as magnesium and calcium, monoethanolamine, triethanolamine, and aminomethylpropanol. It may be an organic salt such as an amine salt, and can be substituted without being limited to the examples.
In addition, fatty acid salts or N-acylamino acid salts, etc. may be neutralized beforehand, but fatty acids or N-acylamino acid salts, etc., and alkaline agents may be used as separate components. It may be. These can be used alone or in combination of two or more. The alkaline agent may be a compound containing an inorganic salt or an organic salt, and the compound includes, but is not limited to, a hydroxide.

Among these components (A), in the present invention, fatty acid salts, N-acyl taurine or its salts, N-acyl amino acids or Preferably, one or more selected from these salts, etc., more preferably fatty acid salts, and the component (A) preferably contains one or more selected from these salts, and at least fatty acid salts. It is more preferable to include.

More specifically, from the viewpoint of white residue during application, softness of the cosmetic film, and glossy feeling on the skin, component (A) is stearate, N-stearoylmethyltaurine or a salt thereof, N-stearoylglutamic acid or One or more salts selected from these salts are more preferred, and among these, stearate is even more preferred.

The content of component (A) in the present invention is not particularly limited, but a preferable lower limit of the content of component (A) is to better maintain white residue during application and improve emulsion stability. In order to achieve good results, it is preferably 0.3% by mass or more (hereinafter simply abbreviated as "%") in the oil-in-water emulsified cosmetic, more preferably 0.5% or more, and 1.0% or more. is even more preferable. In addition, since the softness of the cosmetic film is better and the glossiness of the skin is also good, the preferred upper limit of the content of component (A) is 5% or less in the oil-in-water emulsion cosmetic. The content is preferably 3.8% or less, more preferably 3% or less, further preferably 2.5% or less, and even more preferably 2.2% or less. The preferred numerical range of the component (A) in the oil-in-water emulsion cosmetic is preferably 0.3 to 5%, more preferably 0.5 to 3%.
The content of component (A) is calculated based on the mass (in terms of sodium salt) assuming that component (A) is a sodium salt compound. For example, the content of fatty acid or fatty acid salt or The content mass ratio and the like can be calculated as the mass of fatty acid Na (in terms of sodium salt).

The content of one or more selected from fatty acid salts, N-acylmethyltaurine or its salts, N-acylamino acids or its salts in component (A) in the present invention is not particularly limited, but oil-in-water type In emulsified cosmetics, a suitable lower limit is preferably 0.3% or more, more preferably 0.5% or more, and even more preferably 1.0% or more, and a suitable upper limit is preferably 5% or more. % or less, more preferably 3.8% or less, further preferably 3.5% or less, even more preferably 3% or less, more preferably 2.5% or less, more preferably 2.2% or less. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

The content of higher fatty acid salt (preferably stearate) in component (A) in the present invention is not particularly limited, but is preferably 0.3% or more as a suitable lower limit in the oil-in-water emulsion cosmetic. , more preferably 0.5% or more, still more preferably 1.0% or more, and a suitable upper limit is preferably 5% or less, more preferably 3.8% or less, still more preferably 3.5%. % or less, even more preferably 3% or less, more preferably 2.5% or less, even more preferably 2.2% or less. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

<1-2. Component (B) Oil agent whose water-holding capacity is greater than a specified value relative to its own weight>
Component (B) used in the present invention is an oil agent (hereinafter also referred to as "water-retaining oil agent") that can hydrate an amount of water equal to or more than its own weight, and has better persistence of instant white residue. From the viewpoint of better skin gloss, this oil agent also has a water-holding capacity of more than a predetermined value relative to its own weight.

As used herein, the term "water-holding power relative to its own weight" refers to the ability of an oil agent to retain water (mass) equal to or greater than its own weight. "Hydrostatic capacity (%) of oil agent relative to its own weight" is determined by the following test method: [Amount of water added until water drains from the sample (mass)/Self weight of oil agent (initial mass of sample)] x 100 It can be calculated in %. For example, when water is added to 1 g of oil and the amount of water retained is 1.4 g, the water-holding capacity relative to its own weight is 140% (hereinafter, the unit (%) may be omitted).

In the present invention, the value (%) of "water-holding power relative to its own weight" in the water-holding oil agent (B) can be determined by the following test method. For example, "a water-retaining oil having a water-holding power of 140% or more relative to its own weight" is one that has a "water-holding power" value of 140 or more in the following test method.

<Test method (method for measuring water-holding power of water-retaining oil)>
Test method: As the water-holding power test method of the present invention to determine whether or not it holds water (mass) equal to or more than its own weight at 50 ° C., 20 g of the starting oil agent (initial sample) is weighed in a 200 mL beaker, Heat the sample to 50°C and gradually add water at 50°C while stirring at 3000 rpm with a despar mixer. Add water until the water drains from the sample. The amount of water added) was measured, this value was divided by the mass (20 g) of the oil solution (initial sample), and the value multiplied by 100 was calculated as the "water-holding power (%)".

Regarding the above test method, more specifically, the time when the added water is visually observed as if it is being flicked around on the oil solution being stirred is determined from "no water being drained". It can be determined that the time has changed to "water is being drained", and the addition of water is finished at this time. After completion, discard the liquid (water) floating on top of the oil solution that has been hydrated to its maximum (maximum hydrated sample). The mass of the maximum hydrated oil agent (sample of maximum hydrated water) in the beaker in which the drained fluid (water) was discarded can be measured, and this mass can be taken as the "maximum mass of water that does not drain." . Note that this observation is not limited to visual observation, and may be performed using an image sensor.

As the component (B) water-retaining oil, a water-retaining oil having a water-retaining power relative to its own weight is preferably at least a predetermined value, and the lower limit of the water-retaining power is preferably 125% or more, more preferably 130% or more, and even more preferably. is 140% or more, and the water-retaining oil of component (B) has a water-retaining power higher than a predetermined value, which increases the feeling of white residue (persistence) when applying the oil-in-water emulsion cosmetic and improves the appearance of the skin after application. It is possible to improve the glossiness of the skin. Further, a preferable upper limit value of the water-holding capacity relative to its own weight is not particularly limited, but includes, for example, 600% or less, preferably 510% or less, more preferably 350% or less, still more preferably 220% or less, or 210% or less. % or less or 170% or less. A more suitable numerical range of the water-holding power relative to its own weight is more preferably 140 to 510%, and even more preferably 140 to 510%, from the viewpoint of the persistence of white residue upon application, improvement in skin gloss, and softness of the cosmetic film. 350%, even more preferably 140-220%, more preferably 140-170%.

Component (B), a water-retaining oil having a water-retaining power equal to or higher than a predetermined value, can be any of those that can be used in general cosmetics, including vegetable oils, animal oils, and fatty acid ester compounds (e.g. , ester compounds of fatty acids and components having one or more hydroxyl groups selected from higher alcohols, sterols, sugars, polyhydric alcohols, amino acids, castor oil, etc.; One type or two or more types can be used as appropriate.

Specific examples of the component (B) as a water-holding oil having a water-holding capacity relative to its own weight are a predetermined value or more, such as castor oil, shea butter, beef tallow, N-acyl amino acid ester, glycerin fatty acid ester, dimer acid ester, and dimeric acid ester. Examples include pentaerythritol fatty acid ester. One or more selected from these can be used as appropriate.

More specifically, the component (B) water-retaining oil having a water-retaining power relative to its own weight is a predetermined value or more, for example, N-lauroyl-L-glutamic acid di(phytosteryl/2-octyldodecyl), N-lauroyl-L- Dioctyldodecyl glutamate, di(cholesteryl/octyldodecyl) N-lauroyl-L-glutamate, di(cholesteryl/behenyl/octyldodecyl) N-lauroyl-L-glutamate, di(phytosteryl/behenyl/octyl) N-lauroyl-L-glutamate N-acyl amino acid esters such as (dodecyl); hexaglycerin fatty acid ester, decaglycerin fatty acid ester, (adipic acid/2-ethylhexanoic acid/stearic acid) glyceryl oligoester, stearic acid hydrogenated castor oil, hydroxystearic acid hydrogenated castor oil, etc. Glycerin fatty acid esters; dimer acid esters such as dimer dilinoleic acid (phytosteryl/isostearyl/cetyl/stearyl/behenyl), di(isostearyl/phytosteryl) dimer dilinoleate, dimer dilinoleyl bisisostearyl dimer dilinoleate, etc. Dipentaerythritol fatty acid esters such as dipentaerythrityl (12-hydroxystearic acid/stearic acid/rosin acid), dipentaerythrityl hexa(12-hydroxystearic acid/stearic acid/rosin acid), dipentaerythrityl (12-hydroxystearic acid/isostearic acid), etc. Sterol fatty acid esters such as fatty acid cholesteryl esters such as cholesteryl isostearate, cholesteryl hydroxystearate, cholesteryl ricinoleate, fatty acid phytosteryl esters such as macadamia nut oil fatty acid phytosteryl; etc., and one or two types selected from these. The above can be used as appropriate.

Among the components (B), glycerin fatty acid esters, dipentaerythritol fatty acid esters, fatty acid cholesteryl esters, and fatty acid phytosteryl esters are preferred from the viewpoint of persistence of white residue upon application, improvement of skin gloss, and softness of cosmetic film. One or more types selected from polyesters and the like are preferable, and it is preferable that the component (B) contains one or more types from these.

Among these components (B), in the present invention, phytosteryl oleate (water-holding power: 144), macadamia nut oil fatty acid phytosteryl (water-holding power :202), di(phytosteryl/2-octyldodecyl) N-lauroyl-L-glutamate (hydrating capacity: 501), hexa(12-hydroxystearic acid/stearic acid/rosin acid) dipentaerythrityl (hydrating capacity: 336), hydroxy Cholesteryl stearate (hydrating power: 169) is more preferred, and one or more selected from these can be used as appropriate.

Among these components (B), in the present invention, phytosteryl oleate and/or macadamia nut oil fatty acids are used in the present invention from the viewpoint of the persistence of white residue upon application, the glossiness of the skin after application, and the softness of the cosmetic film. Phytosteryl is preferred, and the component (B) preferably contains phytosteryl oleate and/or macadamia nut oil fatty acid phytosteryl, more preferably at least phytosteryl oleate.

Commercially available products for such component (B) include, for example, rice sterol ester (manufactured by Tsukino Rice Fine Chemicals) for phytosteryl oleate, and PLANDOOR MAS (manufactured by Nippon Fine Chemical Co., Ltd.) for macadamia nut oil fatty acid phytosteryl. ), in the case of di(phytosteryl/octyldodecyl) N-lauroyl-L-glutamate, for example, Eldew PS-203 (manufactured by Ajinomoto Co., Ltd.), and in the case of dipentaerythrityl hexa(12-hydroxystearic acid/stearic acid/rosin acid). For example, there are Cosmol 168ARN (manufactured by Nisshin Oillio Group), and in the case of cholesteryl hydroxystearate, there are Sarakos HS (manufactured by Nisshin Oillio Group).

The content of component (B) in the present invention is not particularly limited, but the preferred lower limit of the content of component (B) is, from the viewpoint of maintaining white residue upon application, in oil-in-water emulsion cosmetics. Among them, it is preferably 0.2% or more, more preferably 0.3% or more, even more preferably 0.4% or more, even more preferably 0.5% or more, and even more preferably 0.6% or more. In addition, from the viewpoint of the softness of the cosmetic film, the preferable upper limit of the content of the component (B) in the oil-in-water emulsion cosmetic is preferably 5.5% or less, and 4.5%. It is more preferably at most 3.5%, more preferably at most 2.0%, and even more preferably at most 1.5%. The preferred numerical range of component (B) in the oil-in-water emulsion cosmetic is more preferably 0.2 to 5.5%, and even more preferably 0.4 to 3.5%. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

The content of one or more selected from glycerin fatty acid ester, dipentaerythritol fatty acid ester, fatty acid cholesteryl ester, and fatty acid phytosteryl ester in the component (B) is not particularly limited, but oil-in-water emulsion cosmetics In the composition, a suitable lower limit value is preferably 0.2% or more, more preferably 0.4% or more, and still more preferably 0.8% or more, and a suitable upper limit value is preferably 5.5% or more. % or less, more preferably 3.5% or less, even more preferably 2.0% or less, even more preferably 1.5% or less, and even more preferably 1.2% or less. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

The content of phytosteryl oleate or phytosteryl macadamia nut oil fatty acid in the component (B) is not particularly limited, but the lower limit of each content in the oil-in-water emulsion cosmetic is preferably 0.1% or more, preferably 0.1% or more. is 0.2% or more, more preferably 0.4% or more, even more preferably 0.5% or more, and a suitable upper limit is preferably 5.5% or less, more preferably 3.5%. The content is more preferably 2.0% or less, even more preferably 1.5% or less, more preferably 1.0% or less, and even more preferably 0.6% or less. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

<1-3. Component (C) Phenyl-modified silicone>
Component (C) phenyl-modified silicone used in the present invention is a polysiloxane with a phenyl group in part, and it improves the softness of the cosmetic film after application without reducing white residue (persistence) during application. It is blended for the purpose of imparting.
Specific examples of the phenyl-modified silicone component (C) include phenylmethicone, phenyldimethicone, phenyltrimethicone, diphenyldimethicone, diphenylsiloxyphenyltrimethicone, trimethylpentaphenyltrisiloxane, and the like. One type or two or more types can be used as appropriate.

Commercial products of component (C) phenyl-modified silicone include, for example, KF-54, KF-56, KF-54HV (manufactured by Shin-Etsu Chemical Co., Ltd.) as diphenyl dimethicone, and PH-1555 as trimethylpentaphenyltrisiloxane. Examples include HRI Cosmetic Fluid, FZ-3156 (manufactured by Dow Corning Toray Industries), and one or more selected from these can be used as appropriate. Moreover, as the component (C), one obtained by a known manufacturing method may be used.

Among the components (C), in the present invention, diphenyl dimethicone and/or diphenylsiloxyphenyl trimethicone are preferred from the viewpoint of persistence of white residue during application, and component (C) is one or two of these. It is preferable to include.

The content of component (C) in the present invention is not particularly limited, but the preferred lower limit of the content of component (C) in the oil-in-water emulsion cosmetic is preferably 1% or more, and 2% or more. It is more preferably 3% or more, further preferably 4% or more. In addition, the preferable upper limit of the content of the component (C) in the oil-in-water emulsion cosmetic is preferably 9.5% or less, more preferably 9% or less, still more preferably 8% or less, and furthermore 7%. The content is more preferably 6% or less, and more preferably 6% or less. The preferred numerical range of component (C) in the oil-in-water emulsion cosmetic is more preferably 1 to 9%, and even more preferably 2 to 8%. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

The content of diphenyl dimethicone and/or diphenylsiloxyphenyl trimethicone in the component (C) is not particularly limited, but a suitable lower limit in the oil-in-water emulsion cosmetic is preferably 1% or more, more preferably 2%. % or more, more preferably 3% or more, even more preferably 4% or more, and a suitable upper limit is preferably 9% or less, more preferably 8% or less, still more preferably 7% or less, and even more Preferably it is 6% or less. As a result, the persistence of white residue, the softness of the makeup film, and the glossy feeling of the skin can be improved.

<1-4. Component (D) Higher alcohol having 12 to 22 carbon atoms>
The component (D) higher alcohol having 12 to 22 carbon atoms used in the present invention is not particularly limited as long as it is normally used in cosmetics. Those obtained by the manufacturing method described above may be used, or commercially available products may be used. Component (D) higher alcohol having 12 to 22 carbon atoms may be a saturated higher alcohol containing no unsaturated bonds or an unsaturated higher alcohol.

Specific examples of the component (D) higher alcohol having 12 to 22 carbon atoms include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, linoleyl alcohol, and behenyl alcohol. Furthermore, cetostearyl alcohol (a mixture of cetanol and stearyl alcohol), which is a mixture of two types of alcohols, can also be used. Behenyl alcohol having 22 carbon atoms and cetostearyl alcohol, which is a mixture of two types of alcohols, can be preferably used. One or more selected from these can be used as appropriate.

In the present invention, the component (D) is selected from cetanol, stearyl alcohol, cetostearyl alcohol, and behenyl alcohol from the viewpoint of the persistence of white residue upon application, the glossiness of the skin, and the softness of the cosmetic film. Preferably, one or more types, cetostearyl alcohol is more preferable, and the component (D) preferably contains one or more of these, and more preferably contains at least cetostearyl alcohol. .

The content of component (D) in the present invention is not particularly limited, but a preferable lower limit of the content of component (D) is from the viewpoint of maintaining white residue during application and having good emulsion stability. Therefore, it is preferably 0.1% or more, more preferably 0.3% or more, more preferably 0.5% or more, even more preferably 1% or more, and 1.5% in the oil-in-water emulsion cosmetic. The above is even more preferred. In addition, from the viewpoint of the softness of the cosmetic film, the preferable upper limit of the content of the component (D) in the oil-in-water emulsion cosmetic is preferably 8% or less, more preferably 5% or less. , 4% or less is more preferable, and 3% or less is even more preferable. The preferred numerical range of component (D) in the oil-in-water emulsion cosmetic is more preferably 0.1 to 8%, even more preferably 0.3 to 5%.

The content of one or more selected from cetanol, stearyl alcohol, cetostearyl alcohol, and behenyl alcohol in the component (D) is not particularly limited, but in oil-in-water emulsified cosmetics, the preferable lower limit is as follows: Preferably 0.1% or more, more preferably 0.3% or more, even more preferably 0.5% or more, even more preferably 1% or more, more preferably 1.5% or more, and a suitable The upper limit is preferably 8% or less, more preferably 5% or less, still more preferably 4% or less, even more preferably 3% or less. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

The content of cetostearyl alcohol or behenyl alcohol in the component (D) is not particularly limited, but the lower limit in the oil-in-water emulsion cosmetic is preferably 0.3% or more, more preferably 0.3% or more. 5% or more, more preferably 0.8% or more, even more preferably 1% or more, and a suitable upper limit is preferably 4% or less, more preferably 3% or less, even more preferably 2%. .5% or less or 2% or less. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

<1-5. Oil>
The oil agent used in the present invention refers to an oily substance (eg, ester oil, wax, etc.) that is liquid or solid at 25°C.
The oil is not particularly limited as long as it is commonly used in external skin preparations or cosmetics. Such oils include, for example, hydrocarbons, oils and fats, waxes, hydrogenated oils, ester oils, silicone oils, fluorine oils, lanolin derivatives, and oils, regardless of whether they are animal oils, vegetable oils, mineral oils, or synthetic oils. Examples include soluble ultraviolet absorbers, and one or more selected from these can be used as appropriate.

In this specification, "the entire oil agent" refers to component (A) an oil agent that does not include surfactants such as anionic surfactants, component (B) an oil agent that has a water-holding capacity of more than a predetermined value relative to its own weight, and component (C) phenyl-modified silicone. , and component (D) a higher alcohol having 12 to 22 carbon atoms, and oils other than these components (B) to (D), which are the total mass of oils contained in an oil-in-water emulsion cosmetic.

The total content of oil agents in the oil-in-water emulsified cosmetic composition of the present invention, specifically, the total content of oil agents in the oil-in-water emulsified cosmetic composition is not particularly limited, but the lower limit thereof is preferably 0. 01% or more, more preferably 0.05% or more, even more preferably 0.1% or more, more preferably 0.5% or more, more preferably 1% or more, more preferably 3% or more, more preferably 5%. The above is more preferably 8% or more, more preferably 9% or more, more preferably 10% or more, and the upper limit thereof is preferably 20% or less, more preferably 17% or less, even more preferably It is 15% or less, even more preferably 14% or less, more preferably 13% or less, and the preferred numerical range is preferably 0.01 to 20%, more preferably 8 to 15%. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

<1-6. Each content mass ratio>
<Content mass ratio of component (B)/entire oil agent>
The content or mass ratio of component (B) to the entire oil agent of the present invention ([said component (B)/total oil agent]) is not particularly limited, but from the viewpoint of persistence of white residue and glossy feeling, A suitable lower limit value is preferably 0.01 or more, more preferably 0.03 or more, even more preferably 0.04 or more, more preferably 0.05 or more, even more preferably 0.055 or more, and even more preferably 0. .06 or more, and from the viewpoint of the softness of the cosmetic film, a more suitable upper limit is preferably 0.35 or less, more preferably 0.2 or less, still more preferably 0.15 or less, and even more preferably It is 0.14 or less, even more preferably 0.10 or less, more preferably 0.09 or less, and even more preferably 0.08 or less. The preferred numerical range for [component (B)/total oil agent] is more preferably 0.01 to 0.35, and even more preferably 0.05 to 0.10. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

<Content mass ratio of (component (C)/[component (A) + component (D)])>
Content mass ratio or used mass ratio of (total amount of component (A) and component (D)) to component (C) of the present invention (said component (C)/[said component (A) + said component (D)]) ) is not particularly limited, but from the viewpoint of the softness and gloss of the cosmetic film, a more suitable lower limit is preferably 0.45 or more, more preferably 0.5 or more, still more preferably 0.6 or more, and It is more preferably 0.7 or more, more preferably 0.8 or more, more preferably 0.9 or more, more preferably 1.0 or more, and even more preferably 1.1 or more. From this point of view, more suitable upper limit values are preferably 2.5 or less, more preferably 2.2 or less, even more preferably 2.1 or less, even more preferably 2.0 or less, more preferably 1.9 or less, More preferably 1.8 or less, more preferably 1.7 or less, more preferably 1.6 or less, and even more preferably 1.5 or less. The preferred numerical range of the content mass ratio of (component (C)/[component (A) + component (D)]) is more preferably 0.4 to 2.5, still more preferably 1.0 to 1. It is 5. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin. Note that the mass of "component (A)" in (component (C)/[component (A) + component (D)]) was determined in terms of sodium salt as described above.
Furthermore, the oil-in-water emulsion cosmetic of the present invention has the following advantages: the above-mentioned [ingredient (B)/entire oil agent], the above-mentioned ( It is more preferable to combine component (C)/[component (A)+component (D)]), and more preferably, the [component (B)/total oil agent] is 0.01 to 0.35, and , the above (component (C)/[component (A) + component (D)]) is 0.4 to 2.5.

<1-5. Optional ingredients＞
In addition to the above-mentioned components (A) to (D), the oil-in-water emulsified cosmetic of the present invention may contain or blend components used in ordinary external skin preparations to the extent that they do not impair the effects of the present invention. or can be used. Examples of such components include surfactants other than component (A), oil agents other than components (B) to (D), water-soluble polymers, aqueous components such as polyhydric alcohols and lower alcohols, ultraviolet absorbers, and antiseptics. Examples include oxidizing agents, antibacterial agents, preservatives, humectants, pH adjusters, refreshing agents, powders, vitamins, beauty ingredients, fragrances, brightening ingredients, whitening active ingredients, etc., and one or two selected from these. More than one species can be used as appropriate.

In addition to the above-mentioned components (A) to (D), the oil-in-water emulsion cosmetic of the present invention further includes one component selected from L-ascorbic acid 2-glucoside, niacinamide, and tranexamic acids as component (E). Alternatively, two or more types may be contained or blended. Since these have a brightening effect or a whitening effect, a brightening ingredient and/or a whitening active ingredient may be contained, blended, or used in the oil-in-water emulsion cosmetic of the present invention as component (E).

The term "brightening ingredient" as used herein refers to a medicinal ingredient that brightens the skin, and the category of brightening ingredients can include whitening active ingredients. The whitening active ingredient refers to a compound or ingredient that can exhibit a whitening effect on the skin, and is an ingredient or compound that can suppress the production of melanin and prevent spots and freckles. The brightening component or whitening active component may be one obtained by a known manufacturing method (for example, a synthetic component, an extracted component, etc.), or a commercially available product may be used.

L-ascorbic acid 2-glucoside, the component (E) used in the present invention, is a molecule in which one molecule of glucose is bound to the 2-position of L-ascorbic acid, and is known to have a high whitening effect. There is.

Niacinamide, the component (E) used in the present invention, is an amide compound of nicotinic acid (vitamin B3/niacin). Niacinamide is a water-soluble vitamin, a known substance that is one of the vitamin B group, and can be extracted from natural products (such as rice bran) or synthesized by known methods. Specifically, those listed in the 17th edition of the Japanese Pharmacopoeia can be used.

The tranexamic acids used in the present invention as component (E) include one or more selected from tranexamic acid and its derivatives, and these are components that have a whitening effect or an anti-inflammatory effect.
Tranexamic acid is a type of amino acid represented by trans-4-(aminomethyl)cyclohexane-1-carboxylic acid, and is known as a component that has whitening and anti-inflammatory effects on the skin, and is also used as a hemostatic agent. is also sometimes used.
In the present invention, it is possible to use derivatives of tranexamic acid instead of or in addition to tranexamic acid.

The derivatives of tranexamic acid include dimers of tranexamic acid (for example, trans-4-(trans-aminomethylcyclohexanecarbonyl)aminomethylcyclohexanecarboxylic acid), esters of tranexamic acid and hydroquinone (for example, trans- 4-aminomethylcyclohexanecarboxylic acid 4'-hydroxyphenyl ester), esters of tranexamic acid and gentisic acid (for example, 2-(trans-4-aminomethylcyclohexanecarbonyloxy)-5-hydroxybenzoic acid and its salts), amides of tranexamic acid (for example, trans-4-aminomethylcyclohexanecarboxylic acid methylamide and its salts, trans-4-(P-methoxybinzoyl)aminomethylcyclohexanecarboxylic acid and its salts, (trans-4-guanidinoaminomethylcyclohexanecarboxylic acid and its salts), tranexamic acid alkyl esters and its salts.

Specific examples of the tranexamic acids include lauryl tranexamic acid ester, myristyl tranexamic acid ester, cetyl tranexamic acid ester, and stearyl tranexamic acid ester.
Derivatives can also take the form of salts, and the types include mineral salts such as hydrochlorides, phosphates, sulfates, bromates, and nitrates; oxalates, lactates, and citrates. Examples include organic acid salts such as; carbonates, etc.
Among the tranexamic acids, tranexamic acid is preferred as a whitening active ingredient that improves or suppresses pigmentation.

The content of component (E) in the present invention varies depending on the effect as an active ingredient, but in oil-in-water emulsion cosmetics, the lower limit is preferably 1% or more, and 2% or more. It is particularly preferable that it be present, and as a suitable upper limit, it is preferably 10% or less, more preferably 9% or less, even more preferably 8% or less, and even more preferably 7% or less.

The content of one or more selected from L-ascorbic acid 2-glucoside, niacinamide, and tranexamic acids in the component (E) is not particularly limited, but is within a suitable lower limit in an oil-in-water emulsion cosmetic. The value is preferably 1% or more, more preferably 2% or more, and the suitable upper limit is preferably 10% or less, more preferably 9% or less, still more preferably 8% or less, and even more preferably It is 7% or less.

The primary objective of the present invention is to provide an oil-in-water emulsion cosmetic that can instantly produce an effect that brightens the skin and gives an excellent glossy finish to the skin. can be achieved.

The oil-in-water emulsion cosmetic of the present invention may contain or be blended with a powder such as a powder that is transparent and has a pleasant texture in order to obtain the effect of brightening the skin. Furthermore, the present invention has the excellent advantage of being able to instantly brighten the skin without containing or using powder (particularly white pigment).
Therefore, the second object of the present invention is to provide an oil-in-water emulsion cosmetic that can immediately produce an effect that brightens the skin without using a white pigment and that provides an excellent glossy finish on the skin. You can also achieve this second objective.
The above-mentioned "white pigment" includes one or more selected from zinc oxide, titanium oxide, etc., and zinc oxide and titanium oxide generally have the property of reflecting and/or scattering ultraviolet rays. Also called ultraviolet scattering agent.
Therefore, the content of the white pigment in the oil-in-water emulsion cosmetic can be preferably not more than 5%, more preferably not less than 3%, even more preferably not less than 2%, and even more preferably not more than 2%. It can be made so that it does not contain more than 1%. Furthermore, according to the present invention, the content of the white pigment in the oil-in-water emulsion cosmetic may be adjusted to 0.5% or less, 0.1% or less, 0.05% or less, or 0.01% or less. You can choose not to include it. This makes it possible to improve the persistence of white residue, the softness of the makeup film, and the luster of the skin.

Furthermore, the present invention produces an effect that instantly brightens the skin without using powder (particularly white pigment), while also providing a finish that creates a soft makeup film after application and an excellent glossy finish on the skin. The third objective may be to provide an oil-in-water emulsified cosmetic composition, and this third objective can be achieved by adjusting various components and contents.

By achieving the third objective, the present invention, when used on the skin, leaves a white residue at the time of application for a certain length of time, making it possible to instantly brighten the skin. By rubbing it on, the white residue will disappear, but after it disappears, it will create a soft makeup film and give your skin a glossy finish that will brighten your skin.

In addition, the oil-in-water emulsion cosmetic of the present invention can produce an effect that instantly brightens the skin, has a good feeling of use, and has excellent stability over time.

Furthermore, the oil-in-water emulsified cosmetic of the present invention contains, blends, or uses the above-mentioned components (A) to (D) and further component (E) as compounded components, thereby eliminating white residue and achieving a good finish when used. By creating a glossy feeling, it is possible to instantly make the skin look whiter or brighter, and by using the cosmetic for a long time or continuously, it can also have a whitening or brightening effect on the skin. can.
Therefore, the oil-in-water emulsion cosmetic of the present invention is useful as a skin care cosmetic, more preferably a whitening cosmetic or a brightening cosmetic. Note that "brightening cosmetics" generally refer to cosmetics that make the skin appear brighter, cosmetics used to brighten the skin, or external skin preparations.

The method for producing the oil-in-water emulsion cosmetic of the present invention is not particularly limited, and the oil-in-water emulsion cosmetic can be prepared by a conventional method. For example, a mixture of components (A) to (D) or components (A) to (E), and optional components such as other additives as necessary, is mixed with water and optional components as necessary. It can be obtained by adding ingredients and emulsifying them.

The oil-in-water emulsified cosmetic composition of the present invention is not particularly limited, but may have a liquid, gel, emulsion, cream, semi-solid, or solid form. Examples of product forms include massage agents, milky lotions, creams, beauty essences, makeup bases, and skin cosmetics such as sunscreens. Among these, oil-in-water emulsion makeup that is applied to the face is likely to exhibit the effects of the present invention, as it is easy to feel an immediate brightness of the skin due to the white residue left when applied. It is a fee. Further, the usage method includes a method of taking an appropriate amount in the hand and using it. Furthermore, the oil-in-water emulsified cosmetic composition of the present invention may be appropriately applied to oil-in-water emulsified compositions, external skin preparations, quasi-drugs, and the like.

<2. Compositions of the present disclosure, methods of use, etc.>
Furthermore, as another aspect of the present invention, the present disclosure provides an oil-in-water emulsion composition using component (A) an anionic surfactant and component (D) a higher alcohol having 12 to 22 carbon atoms. ) A water-retaining oil and component (C) phenyl-modified silicone are combined or used together to produce an oil-in-water emulsion composition that instantly brightens the skin and gives an excellent glossy finish. can be provided.

In addition, in the explanation in the present disclosure, the components (A) to (E), oil agent, each content, each content mass ratio, and manufacture overlap with the explanation of "1. Oil-in-water emulsion cosmetic of the present invention" mentioned above. Although descriptions of the method, each structure, each method, each term, etc. will be omitted as appropriate, the explanation of "1. Oil-in-water emulsion cosmetic" described above also applies to this embodiment and can be adopted as appropriate. The content and the content mass ratio may also be used as the usage amount and the usage mass ratio. Furthermore, the oil-in-water emulsion composition of the present disclosure may be applied to oil-in-water emulsion cosmetics and the like.

The present disclosure provides immediate skin care by applying to the skin an oil-in-water emulsion composition containing the components (A) to (D) or the components (A) to (E). To provide a method for brightening the skin and/or improving the effect of a glossy finish on the skin, a method for instantly producing an effect of brightening the skin during application, and a method for producing a glossy finish on the skin after further application. Can be done.
The use is not particularly limited, but it is preferable to apply, rub, massage, or the like. The suitable application site is one or more selected from the face, arms, neck, legs, etc. If the oil-in-water emulsion composition of the present disclosure is used, it is possible to vanish by coating, rubbing, massaging, etc., so there is also the advantage that there is no need to perform removal such as wiping with a non-woven or woven fabric such as cotton. be.

The present disclosure provides an oil-in-water emulsion composition containing the component (A) and the component (D), by using the component (B) a water-retaining oil agent and the component (C) a phenyl-modified silicone. Provided is a method for instantly brightening the skin using an oil-in-water emulsion composition containing (A) and the component (D), and/or a method for improving the glossy finish of the oil-in-water emulsion cosmetic. can do.

The present technology can also adopt the following configuration.
[1]
The following ingredients (A) to (D):
(A) Anionic surfactant (B) Oil having a water-holding capacity of 130% or more (more preferably 140% or more) relative to its own weight (C) Phenyl-modified silicone (D) Contains a higher alcohol having 12 to 22 carbon atoms Oil-in-water emulsion cosmetic [2]
The component (A) contains one or more selected from fatty acid salts (preferably fatty acids having 12 to 24 carbon atoms), N-acylmethyltaurine or salts thereof, and N-acyl amino acids or salts thereof. The oil-in-water emulsion cosmetic according to [1] above. More preferably, the component (A) contains at least a fatty acid salt. More preferably, the component (A) contains one or more selected from stearate, N-stearoylmethyltaurine or a salt thereof, a salt thereof, and N-stearoylglutamic acid or a salt thereof.
[3]
The component (B) is phytosteryl oleate, macadamia nut oil fatty acid phytosteryl, di(phytosteryl 2-octyldodecyl) N-lauroyl-L-glutamate, dipentaerythrityl hexa(12-hydroxystearic acid/stearic acid/rosin acid), and The oil-in-water emulsion cosmetic according to [1] or [2] above, which contains one or more selected from cholesteryl hydroxystearate.
[4]
The oil-in-water emulsion cosmetic according to any one of [1] to [3] above, wherein the component (C) contains one or more selected from diphenyl dimethicone and diphenylsiloxyphenyl trimethicone.
[5]
The oil-in-water emulsion cosmetic according to any one of [1] to [4] above, wherein the component (D) contains one or more selected from cetanol, stearyl alcohol, cetostearyl alcohol, and behenyl alcohol. fee. More preferably, the component (D) contains cetostearyl alcohol and/or behenyl alcohol.
[6]
The oil-in-water emulsion cosmetic according to any one of [1] to [5] above, further comprising component (E) a brightening component.
[7]
The oil-in-water emulsion cosmetic according to [6] above, wherein the component (E) contains one or more selected from L-ascorbic acid 2-glucoside, niacinamide, and tranexamic acids.
[8]
The oil-in-water emulsion cosmetic according to any one of [1] to [7] above, wherein the content of the component (D) is less than 10% by mass.
[9]
The content mass ratio of [the above component (B)/the entire oil agent] is 0.01 to 0.35, and/or (the above component (C)/[the above component (A) + the above component (D)]) The oil-in-water emulsion cosmetic according to any one of [1] to [8] above, wherein the content mass ratio of 0.4 to 2.5.
[10]
The oil-in-water emulsion cosmetic according to any one of [1] to [9] above, which does not contain 5% or more of a white pigment.
[11]
A method for instantly brightening the skin and/or giving a glossy finish by using the oil-in-water emulsion cosmetic or the oil-in-water emulsion composition according to any one of [1] to [10] above on the skin. How to improve effectiveness. The use is preferably applied by application, rubbing, or massage.
[12]
Immediate skin brightening for an oil-in-water emulsion composition containing the component (A) and the component (D), which contains the component (B) a water-retaining oil agent and the component (C) a phenyl-modified silicone. A composition or agent for creating an appearance and/or improving a glossy finish.
[13]
A composition or agent for instantly brightening the skin and/or improving a glossy finish effect for an oil-in-water emulsion composition containing the component (A) and the component (D). Component (B) the water-retaining oil agent and component (C) the phenyl-modified silicone or their use for the production of
[14]
For use in an oil-in-water emulsion composition containing the component (A) and the component (D) to instantly brighten the skin and/or to improve the glossy finish. Component (B) the water-retaining oil agent and component (C) the phenyl-modified silicone, or a mixed composition thereof. Alternatively, the above-mentioned component (B) and/or the above-mentioned component (C) may be added to the oil-in-water emulsion composition to instantly brighten the skin and/or to improve a glossy finish. use.

Examples are given below to specifically explain the present invention, but the present invention is not limited to these Examples. Further, unless otherwise specified, the content is expressed in mass % based on the cosmetic containing the component.

Examples 1 to 24 and Test Examples 1 to 9: Emulsion Emulsions having the compositions shown in Tables 1 to 3 were produced by the following manufacturing method, and were used to improve the following: (a) white residue upon application, (b) softness of the cosmetic film, (c) : The glossiness was evaluated by the method shown below. The results are also shown in Tables 1, 2, and 3.

(Manufacturing method: Examples 1 to 13 and Test Examples 1 to 7)
A: Components (1) to (19) were uniformly heated and dissolved at 70°C.
B: Components (20) to (22) were uniformly heated to a solution at 70°C.
C: B was added to A at 70°C and stirred.
D: A milky lotion was obtained by adding (23) to (27) to C at room temperature and stirring.

(Manufacturing method: Examples 14 to 24 and Test Examples 8 to 9)
A: Components (1) to (11) were uniformly heated and dissolved at 70°C.
B: Components (12) to (14) were uniformly heated to a solution at 70°C.
C: B was added to A at 70°C and stirred.
D: A milky lotion was obtained by adding (15) to (20) to C at room temperature and stirring.

Note that the content of stearic acid and N-stearoylglutamic acid in Tables 1 to 3 is the mass when Na salt is not included. In addition, "A, B, C, D, E, oil" in the column of ingredients in Tables 1 to 3 are Component (A), Component (B), Component (C), and Component (D), respectively. ), component (E), and oil agent.

In Tables 1 to 3, phytosteryl oleate (hydrating capacity: 144), macadamia nut oil fatty acid phytosteryl (hydrating capacity: 202), cholesteryl hydroxystearate (hydrating capacity: 169), hexa(12-hydroxystearic acid/stearic acid/ Rosin acid) dipentaerythrityl (water-holding power: 336), N-lauroyl-L-glutamic acid di(phytosteryl 2-octyldodecyl) (water-holding power: 501), hydrogenated coconut oil (water-holding power: 125), petrolatum (water-holding power: 104) ) can be determined using the above-mentioned "Test method (Method for measuring the water-holding power of water-retaining oils)". Since these water-holding powers are 100% or more, It is an oil agent that can hold more than the same amount of water.
In addition, commercial products were used as water-retaining oil agents in Tables 1 to 3, and for example, for "phytosteryl oleate (water-holding power: 144)", rice sterol ester (manufactured by Tsukino Rice Fine Chemicals) was used.

When determining the content mass ratio of [(C)/(A)+(D)] in Tables 1 to 3, the content of (A) was determined in terms of sodium salt. For example, stearic acid 0.3%, 1%, 2%, and 3.5% in Table 1 is converted to sodium salt ((molar mass 284.5 + 23.0)/molar mass 284.5 = 1.08). Based on this, they can be calculated as 0.32%, 1.08%, 2.16%, and 3.78%, respectively.
"Total oil agent (total mass of oil agent)" in [(B)/total oil agent] in Tables 1 to 3 refers to component (B), component (C), and component (D), and these components (B) to ( This is the total mass including oils other than D), and the oils do not include component (A) and surfactant.

(Evaluation method 1)
(B. White residue during application)
Apply a cherry-sized amount of the preparation (approximately 2 g) to the inside of the forearm, and apply the preparation to the area from the base of the palm to the elbow at a constant speed (one round trip per second) so that the preparation quickly absorbs into the skin and disappears. First, the time it took for the white color to spread was measured using a stopwatch.
<Judgment criteria>
(Judgment): (Evaluation)
◎: White remains for 5 seconds or more: Very good ○: White remains for 2 to 5 seconds: Good △: White remains for 1 to 2 seconds: Slightly poor ×: White remains for 1 second or less: Poor

To give a more specific explanation, a specialized panel places a cherry-sized preparation (approximately 2 g) on the skin on the inside of the forearm and rubs it from the base of the palm to the elbow (the hollow of the inside of the arm opposite the elbow). Apply the preparation between the areas with your palm by rubbing it back and forth at a constant speed (one reciprocation per second) to allow it to be absorbed. By rubbing the formulation back and forth, the formulation does not blend into the skin at first and spreads out white, making the skin look white, and with further rubbing, the white residue (white color) of the formulation disappears. The specialized panel that evaluates white residue determines that the formulation has "adjusted" when it disappears. The specialized panel that judges white residue uses a stopwatch to measure the period (time) from the start of application to the time when the formulation is absorbed into the skin by rubbing, and measures this time at the time of application. The remaining white time during application is evaluated using the above <judgment criteria>.

(Evaluation method 2)
A panel of 10 women in their 20s to 40s who have received training in sensory evaluation and can perform evaluations based on certain standards were selected. The expert panel used each sample on the forearm and evaluated the softness of the cosmetic film felt during use and the glossiness of the skin after application using the following absolute evaluation on a five-point scale. Furthermore, regarding the softness and glossiness of the cosmetic film, the average value was calculated from the total scores of all the panelists for each sample, and the results were evaluated according to the following four-level criteria.

(B: Softness of cosmetic film)
<Absolute evaluation criteria>
(Rating): (Evaluation)
5 points: I feel that the film has no hardness after application. 4 points: I feel that there is no film hardness after application. 3 points: Fair (cannot say either good or bad).
2 points: I feel that there is some film hardness after application 1 point: I feel that there is film hardness after application <4-level evaluation criteria> (same for the following evaluation items)
(Judgment): (Average score)
◎: More than 4.5 points: Very good ○: More than 3.5 points and 4.5 points or less: Good △: More than 1.5 points and 3.5 points or less: Slightly poor ×: 1.5 points or less : Bad

In addition, "no film hardness after application" means that the cosmetic film is soft and has no hardness, and "feeling a little hard without film hardness" means that the cosmetic film feels slightly soft. . "Feeling that the film is a little hard" means that the cosmetic film feels somewhat hard, and "feeling that the film is hard" means that the cosmetic film feels that it is hard. The soft film feeling refers to the perceived softness of the makeup film.

(C: Shiny feeling)
<Absolute evaluation criteria>
(Rating): (Evaluation)
5 points: I feel that my skin is shiny 4 points: I feel that my skin is somewhat shiny 3 points: Fair (I can't say it's good or bad)
2 points: I don't feel that my skin is very shiny. 1 point: I don't feel that my skin is very shiny.

As is clear from the results in Tables 1 to 3, the emulsions of Examples 1 to 24 were superior to the emulsions of Test Examples 1 to 9 in terms of immediate white residue, softness of the cosmetic film after application, and glossiness. It was excellent. The emulsions (oil-in-water type emulsified cosmetics) of Examples 1 to 24 can produce a good effect of instantly whitening the skin by maintaining a white residue when rubbed, and further, by rubbing it, the white residue can be reduced. Vanishing resulted in a good soft makeup film and a good glossy finish. At this time, when the emulsions of Examples 1 to 24 were used, there was no need to perform wiping with a nonwoven or woven cloth such as cotton during finishing.

On the other hand, Test Example 1 (Comparative Example 1), which did not contain component (A), was inferior in immediate white residue (effect of producing whiteness and making the skin look brighter).
Test Example 2 (Comparative Example 2), in which a mixture of vaseline with a water-holding capacity of 104% and hydrogenated coconut oil with a water-holding capacity of 125% relative to its own weight was used in place of the water-holding oil agent (B) of Example 1, provided instant whitening. It was inferior in rest and gloss. Considering Example 1, Test Example 2, and Example 8, among water-retaining oils, oils with a water-holding capacity of at least 120% or more, more preferably 140% or more relative to its own weight are used to create an instant white residue. The present inventor thought that it is important to include or use it in order to do so.
Test Example 3 (Comparative Example 3), which used silicone oil without phenyl groups instead of component (C) phenyl-modified silicone, had the effect of instantly brightening the skin without leaving any white residue. It has become inferior to.
Test Example 4 (Comparative Example 4), which did not contain component (D), was inferior in immediate white residue.
Further, in Test Example 5, the immediate white residue was very good, and although the gloss was somewhat poor, it was possible to produce an effect that generally made the skin look brighter. In Test Example 7, the immediate white residue was very good, and the gloss was also very good.

Furthermore, from the results in Tables 1 and 2, Examples 1 to 24 had good immediate white residue and gloss, were able to create an effect that made the skin look brighter, and formed a softer makeup film. As a result, a better usability can be obtained.

From this, component (A) an anionic surfactant, component (B) a water-retaining oil having a water-retaining capacity of 125% or more relative to its own weight, component (C) a phenyl-modified silicone, and component (D) a silicone with a carbon number of 12 to 22. An oil-in-water emulsion cosmetic containing a higher alcohol can instantly produce an effect that brightens the skin and provides an excellent glossy finish.

Examples 1 and 14 were very good in terms of white residue over time, soft film feel, and gloss.

In Examples 1, 9, and 10, stearate, N-stearoylglutamate, and N-stearoylmethyltaurate were preferred as component (A), and stearate was particularly preferred. . Further, it was considered that the content of component (A) is preferably 0.32% to 3.78%.

In Examples 1 and 8, the component (B) is phytosteryl oleate, macadamia nut oil fatty acid phytosteryl, N-lauroyl-L-glutamate di(phytosteryl/2-octyldodecyl), hexa(12-hydroxystearic acid/ Preferred are dipentaerythrityl stearic acid/rosin acid and cholesteryl hydroxystearate, which are oil agents with a water-holding capacity of 140% or more and 340% or less. Furthermore, from Examples 1 to 7 and Example 11, phytosteryl oleate and/or macadamia nut oil fatty acid phytosteryl are more preferred, and it is further desirable to contain at least phytosteryl oleate. Based on Examples 1, 14, 17, and 18, it was considered that the content of component (B) is more preferably 0.2 to 5.5%.

Based on Examples 1, 3, and 12, diphenyl dimethicone and/or diphenylsiloxyphenyl trimethicone were suitable as component (C). According to Examples 1, 14, 19, 20, etc., the content of component (C) was more preferably 2 to 9%.

Based on Examples 1, 13, 21, 22, etc., cetostearyl alcohol and/or behenyl alcohol were preferred. According to Examples 1, 14, 22, 23, etc., the content of component (D) was more preferably 0.3 to 5%.

From Example 1, Example 14, Example 6, Example 7, Example 18, etc., the content mass ratio of [the component (B)/total oil agent] is more preferably 0.01 to 0.35, 0. .05 to 0.1 was more suitable.
From Example 1, Example 14, Example 5, Example 19, etc., the content mass ratio of [the component (A) + the component (D)] is more preferably 0.4 to 2.5, 1 .0 to 1.5 was more suitable.

Furthermore, from Examples 1 to 24, even when brightening ingredients and whitening active ingredients are included, immediate white residue and good skin glossiness are obtained, so it is possible to create instant skin brightness, and this By using oil-in-water emulsion cosmetics over a long period of time, you can expect brightening and whitening effects. Therefore, by using the oil-in-water emulsion cosmetic of the present invention, it is possible to meet the expectations of users who want immediate brightness of their skin, and also to improve the brightness of their skin with long-term use. It can also meet expectations for improvement or maintenance.

Prescription example 1: Oil-in-water emulsion type serum (ingredients) (mass%)
(1) N-stearoylmethyltaurine Na 0.8
(2) Phospholipid 0.2
(3) Macadamia nut oil fatty acid phytosteryl 0.5
(4) Hexa(hydroxystearic acid/stearic acid/rosin acid) dipentaerythrityl 0.5
(5) Dimethicone 1
(6) (Dimethicone/vinyl dimethicone) crosspolymer 1.2
(7) Meadowfoam oil 1
(8) Dicapric acid PG 8
(9) Diphenyl dimethicone 4
(10) Cetostearyl alcohol 1.5
(11) Purified water remaining amount (12) Glycerin 5
(13) Xanthan gum 0.02
(14) Carrageenan 0.01
(15) Gellan gum 0.01
(16) (Acrylates/alkyl acrylate (C10-30) crosspolymer 0.1
(17) Sodium hydroxide 0.03
(18) Tranexamic acid 2
(19) L-ascorbic acid 2-glucoside 2
(20) L-serine 0.05
(21) L-arginine 0.01
(22) Hydrolyzed hyaluronic acid 0.01
(23) Ethylhexylglycerin 0.2
(24) Ethanol 5

(Production method)
A: Components (1) to (10) are uniformly mixed and dissolved at 70°C.
B: Components (11) to (12) are uniformly dissolved and mixed at 70°C.
C: Add B to the above A and emulsify at 70°C.
D: After cooling the above C to 40°C, components (13) to (24) were added and mixed uniformly to obtain a serum.
The oil-in-water emulsion type serum of Formulation Example 1 obtained as described above was excellent in the persistence of white residue upon application, the softness of the cosmetic film, and the glossiness.

Claims (7)

The following ingredients (A) to (D):
(A) Anionic surfactant 0.3 to 5% by mass
(B) Oil having a water-holding capacity of 140% or more relative to its own weight (C) Phenyl-modified silicone 2 to 9.5% by mass
(D) Higher alcohol having 12 to 22 carbon atoms 0.1% by mass or more and less than 10% by mass
Contains
The component (A) contains one or more selected from fatty acid salts, N-acylmethyltaurine or salts thereof, N-acyl amino acids or salts thereof,
Oil-in-water emulsion cosmetics (sesame extract, soybean extract, dayflower extract, niacinamide, sodium N-stearoyl-N-methyltaurine, methylphenylpolysiloxane, macadamia nut oil fatty acid phytosteryl, cetostearyl alcohol, (Excluding oil-in-water emulsion creams containing behenyl alcohol). The oil-in-water emulsion cosmetic according to claim 1 , wherein the content mass ratio of (the component (C)/[the component (A) + the component (D)]) is 0.4 to 2.5 . The component (B) is phytosteryl oleate, macadamia nut oil fatty acid phytosteryl, N-lauroyl-L-glutamate di(phytosteryl 2-octyldodecyl), hexa(12-hydroxystearic acid/stearic acid/rosin acid) dipentaerythrityl, hydroxy The oil-in-water emulsion cosmetic according to claim 1 or 2, which contains one or more selected from cholesteryl stearate. The oil-in-water emulsion cosmetic according to any one of claims 1 to 3, wherein the component (C) contains one or more selected from diphenyl dimethicone and diphenylsiloxyphenyl trimethicone. The oil-in-water emulsion cosmetic according to any one of claims 1 to 4, wherein the component (D) contains one or more selected from cetostearyl alcohol and behenyl alcohol. Furthermore, the component (E) contains one or more selected from L-ascorbic acid 2-glucoside, niacinamide, and tranexamic acids;
The tranexamic acids are selected from tranexamic acid, a dimer of tranexamic acid, an ester of tranexamic acid and hydroquinone, an ester of tranexamic acid and gentisic acid, an amide of tranexamic acid, an alkyl ester of tranexamic acid, and a salt thereof. The oil-in-water emulsion cosmetic according to any one of claims 1 to 5, which is one or more types . The oil-in-water emulsion cosmetic according to any one of claims 1 to 6, which is used to instantly brighten the skin.