JP2018168146A - Composition for oil-in-water type cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil-in-water cosmetic composition having a good feeling of use such as improving the firmness and elasticity of the skin, improving wrinkles and sagging, and having no stickiness, and suppressing creaming over time. , Provision of sheet-shaped cosmetics in which separation is suppressed over time in a non-woven fabric impregnated state. SOLUTION: The following components (A) to (D) are contained, and the content mass ratio of the component (B) and the component (C) to the component (D): {(B) + (C)} / (D). An oil-in-water cosmetic composition having a mass of 1/10 to 10. (A) Nicotinic acid amide: 1 to 10% by mass (B) Polyoxyethylene-added castor oil (C) Polyoxyethylene-added sorbitol fatty acid ester (D) Liquid oil agent [Selection diagram] FIG.

Description

  The present invention improves the elasticity and elasticity of the skin, has improved usability such as no stickiness, and an oil-in-water cosmetic composition in which creaming over time is suppressed, and a nonwoven fabric impregnated state The present invention relates to a sheet-like cosmetic in which separation with time (occurrence of oil unevenness) is suppressed.

Skin causes spots, wrinkles, sagging, pigmentation and the like due to internal factors such as aging and stress and external factors such as ultraviolet rays and air drying. Among them, morphological changes such as wrinkles and sagging greatly affect the appearance impression, and many people want to improve it. Many drugs have been proposed to prevent and improve these wrinkles and sagging. Among these, nicotinamide is a vitamin and is known to have high safety and an anti-skin aging effect (Patent Document 1). However, it is known that when a large amount of nicotinic acid amide is contained, there is an undesirable feeling of use such as stickiness, and this improvement has been made (Patent Document 2).
On the other hand, sheet-like cosmetics impregnate skin with a lotion or the like and allow it to act on the skin for a long time, thereby providing sufficient moisture and active ingredients to the skin and providing moisturizing and skin-beautifying effects. The market is expanding. Specifically, a nonwoven fabric-impregnated cosmetic is proposed in which a nonwoven fabric is impregnated with a water-soluble polymer and a polyhydric alcohol (Patent Document 3).

JP-A-10-130135 Special table 2003-502435 gazette Japanese Patent Laid-Open No. 10-279429 JP 2007-176810 A

  Patent document 2 which tried to suppress the stickiness of nicotinic acid amide is a technique containing both high-stretching oils such as branched chain hydrocarbons and liquid ester emollients, but the effect was insufficient. When the oil content is high, there is a problem that creaming occurs with time.

  Moreover, although the sheet-like cosmetic impregnated with a composition containing nicotinamide at a high concentration of 1 to 10% by mass, which can be expected to have a firmness and elasticity imparting effect on the skin, can be expected to have a further beautiful skin effect, There are few (Patent Document 4). Sheet cosmetics are characterized by their method of use and are attached to the application site for several tens of seconds to several tens of minutes. Therefore, the influence of volatilization of moisture and the like during use (when the seat was mounted) became large, and the degree of stickiness of nicotinamide was greatly deteriorated. Therefore, in order to improve the stickiness at the time of use, when a liquid oil was included in the nicotinamide-containing composition used for the sheet-like cosmetic, the stickiness was improved to some extent, but the sheet was impregnated. The nicotinic acid amide-containing composition was separated over time, resulting in a new problem such as oil unevenness.

In view of this situation, the present inventors have conducted extensive research to solve the above problems, and as a result, the polyoxyethylene-added castor oil is used together with 1-10% by mass of nicotinic acid amide based on the total mass of the composition. , A polyoxyethylene addition type sorbite fatty acid ester, and a liquid oil agent, and a content mass ratio of the component (B), the component (C), and the component (D): {(B) + (C)} / ( D) 1/10 to 10 oil-in-water cosmetic composition is excellent in skin elasticity and elasticity, has an improved feeling of use without stickiness, and suppresses creaming over time. I found out.
Again, when the above-mentioned composition for oil-in-water cosmetics has an average particle size of 500 nm or less and contains a polysaccharide thickener, preferably xanthan gum, the skin elasticity and elasticity imparting effect is particularly remarkable. It has been found that it has an improved feeling of use, such as no stickiness, and that the creaming over time is also suppressed.
Furthermore, the above oil-in-water cosmetic composition is excellent in imparting firmness and elasticity to the skin when impregnated into a nonwoven fabric, and has improved stickiness during use. It was found that separation (occurrence of oil unevenness) was suppressed, and the present invention was completed.

That is, the present invention includes the following components (A) to (D):
(A) Nicotinamide 1 to 10% by mass
(B) polyoxyethylene addition type castor oil (C) polyoxyethylene addition type sorbite fatty acid ester (D) containing liquid oil agent,
Component (B) and content ratio of component (C) and component (D): Oil-in-water cosmetic composition with {(B) + (C)} / (D) being 1/10 to 10 .
Furthermore, the oil-in-water cosmetic composition of the present invention may have an average particle diameter of emulsified droplets of 500 nm or less.
Further, in the present invention, the component (B) may be one or more selected from polyoxyethylene addition type castor oil having an average addition mole number of oxyethylene of 10 to 60.
In the present invention, the component (C) may be one or more selected from polyoxyethylene-added sorbit fatty acid esters having an average addition mole number of oxyethylene of 10 to 60.
Furthermore, this invention may contain a component (E) polysaccharide thickener.
Furthermore, in the present invention, the component (E) may be xanthan gum.
Furthermore, 0.15-0.5 may be sufficient as this invention: (A) / (D) containing mass ratio of the said component (A) and the said component (D).
Furthermore, the present invention may be a sheet-like cosmetic in which a nonwoven fabric is impregnated with the oil-in-water cosmetic composition.

  The present invention improves the firmness and elasticity of the skin, prevents and improves aging morphological changes such as wrinkles and sagging, has a good feeling of use such as no stickiness, and underwater creaming is suppressed. Provided are a composition for oil-type cosmetics and a sheet-like cosmetic in which separation with time (occurrence of oil unevenness) in a nonwoven fabric impregnated state is suppressed.

It is a figure which shows the result of "Evaluation item: E. Evaluation of oil unevenness with time of impregnated composition" in Example 1 and Comparative Example 3 in Table 1. Specifically, Example 1 and Comparative Example 3 impregnated in a nonwoven fabric were stored for 1 month at a temperature of 50 ° C., and then the nonwoven fabric was taken out from the packaging, spread over the entire surface, and an image of the appearance taken. It is.

  Hereinafter, the configuration of the present invention will be described in detail. In the present specification, a numerical range represented by using “to” means a range including numerical values described before and after “to” as a lower limit value and an upper limit value.

[Component (A)]
The component (A) nicotinic acid amide in the present invention is an amide compound of nicotinic acid (vitamin B3 / niacin). Nicotinamide is a water-soluble vitamin and is a known substance that is one of the vitamin B groups, and can be extracted from a natural product (rice bran or the like) or synthesized by a known method. Specifically, those listed in the 15th revision Japanese Pharmacopoeia 2008 can be used.

  In this invention, content of a component (A) is 1-10 mass% in this composition for oil-in-water cosmetics in order to improve the elasticity and elasticity of skin, and to suppress stickiness, and 3-10 mass% Is preferable, and 4 to 9% by mass is particularly preferable. When the content of the component (A) is less than 1% by mass, the skin elasticity / elasticity imparting effect is not excellent, and when it exceeds 10% by mass, the stickiness during use is severe and the feeling of use is poor.

[Component (B)]
The component (B) polyoxyethylene addition castor oil in the present invention is a surfactant obtained by adding ethylene oxide to castor oil or hydrogenated castor oil, or further adding a fatty acid. The average added mole number of oxyethylene is preferably 10 to 60 mol, more preferably 10 to 40 mol. Specifically, polyoxyethylene (10-60 EO) castor oil, polyoxyethylene (10-60 EO) hydrogenated castor oil, polyoxyethylene monolaurate (10-60 EO) hydrogenated castor oil , Monoisostearate polyoxyethylene (10-60 EO) hydrogenated castor oil, polyisoethylene stearate polyoxyethylene (10-60 EO) hydrogenated castor oil, and the like. It can be selected and used. Moreover, as a commercial item, Nikkor CO series, Nikkor HCO series (above, the Nikko Chemicals company make), Emarex RWL series, Emarex RWIS series (above, Nihon Emulsion company make) etc. are mentioned, for example.

[Component (C)]
The component (C) polyoxyethylene addition type sorbite fatty acid ester in the present invention is a surfactant obtained by further adding a fatty acid to a product obtained by adding ethylene oxide to sorbitol. The average added mole number of oxyethylene is preferably 10 to 60 mol, more preferably 30 to 60 mol. Specific examples include polyoxyethylene tetraoleate (10 to 60 EO) sorbite, polyoxyethylene tetrastearate (10 to 60 EO) sorbite, and the like. It can be selected and used. Moreover, as a commercial item, Nikkor GO series, Nikkor GS series (above, Nikko Chemicals company make) etc. are mentioned, for example.

  The content of component (B) and component (C) in the present invention is not particularly limited, but is preferably 0.1 to 10% by mass, more preferably 0, in the oil-in-water cosmetic composition. 0.5 to 5% by mass. Within this range, various oils used in cosmetics can be better emulsified, the stability of the oil-in-water cosmetic composition is not only improved, but also the oil-in-water cosmetic composition. The stickiness of things is also improved.

[Component (D)]
If the component (D) liquid oil agent in this invention is an oil agent which is liquid at 25 degreeC, what is normally used for cosmetics can be used without a restriction | limiting especially. For example, oils such as hydrocarbons, fats and oils, ester oils, higher alcohols, higher fatty acids, silicone oils, fluorine oils, lanolin derivatives, etc., regardless of the origin of animal oil, vegetable oil, synthetic oil, etc. Can be mentioned. More specifically, liquid paraffin, heavy liquid isoparaffin, α-olefin oligomer, hydrocarbons such as squalane, polyisobutylene and polybutene, oils and fats such as olive oil, castor oil, macadamian nut oil, jojoba oil, adipic acid Diisobutyl, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, alkyl glycol monoisostearate, isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, 2-ethylhexane Cetyl acid, neopentyl glycol di-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octanoate, oleyl oleate, Octyldodecyl oleate, decyl oleate, neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, ethyl acetate, butyl acetate, isocetyl stearate, butyl stearate, diisopropyl sebacate, di-2-ethylhexyl sebacate Cetyl lactate, myristyl lactate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptyl undecyl palmitate, dipentaerythritol fatty acid ester, isopropyl myristate, isopropyl palmitate, 2-myristate 2- Octyldodecyl, 2-hexyldecyl myristate, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, N- Lauroyl-L-glutamic acid-2-octyldodecyl ester, diisostearyl malate, glyceryl triisooctanoate, glyceryl triisostearate, diglyceryl diisostearate, diglyceryl triisostearate, diglyceryl tetraisostearate, decaglyceryl decaisostearate , Esters of glyceryl triisopalmitate, glyceryl trimyristate, diglyceryl myristate, diglyceryl isostearate, amino acid oils such as N-lauroyl-L-glutamate (phytostearyl 2-octyldodecyl), octyldodecanol ( 2-octyldodecanol), 2-hexyldecanol, 2-decyltetradecanol, oleyl alcohol, isostearyl alcohol, isocetyl alcohol Higher alcohols such as coconut alcohol, olive alcohol, jojoba alcohol and decyltetradecyl alcohol, higher fatty acids such as isostearic acid, isopalmitic acid, oleic acid, linoleic acid, linolenic acid, dimethylpolysiloxane, methylphenylpolysiloxane, deca Methylcyclopentasiloxane, octamethylcyclotetrasiloxane, alkoxy-modified organopolysiloxane, silicone oils such as fluorine-modified silicone, fluorine-based oils such as perfluoropolyether, lanolin, lanolin acetate, lanolin fatty acid isopropyl, lanolin alcohol, etc. Examples include lanolin derivatives, and one or more of these can be used.

In the present invention, the liquid in the “oil oil that is liquid at 25 ° C.” of the component (D) liquid oil agent means that the viscosity at 25 ° C. is 20000 mPa · s or less, and the viscosity is a B-type viscosity at 25 ° C. It can be measured using rotor No. 2 or 3 in total. The viscosity of the component (D) liquid oil at 25 ° C. is preferably 10 to 10,000 mPa · s, more preferably 20 to 1000 mPa · s, and still more preferably 20 to 10 in terms of non-stickiness and good emulsion stability. 400 mPa · s.

  Although content of the component (D) liquid oil agent in this invention is not specifically limited, 0.5-30 mass% is preferable in this composition for oil-in-water cosmetics, More preferably, 1-25 mass%, Furthermore, Preferably it is 2-20 mass%. If it is this range, the component (D) liquid oil agent in this invention can be emulsified more favorably, and not only stability will be better, but the stickiness of this oil-in-water type cosmetic composition will also be improved.

  In the present invention, component (B) and the mass ratio of component (C) and component (D): {(B) + (C)} / (D) represents the emulsion stability of the oil-in-water cosmetic composition. And from a viewpoint of stickiness suppression at the time of use, it is 1 / 10-10, preferably 1 / 5-8, more preferably 1 / 4-7. On the other hand, if the content mass ratio of component (B) and component (C) to component (D) in the present invention: {(B) + (C)} / (D) is less than 1/10, an oil-in-water type The emulsification stability of the cosmetic composition is poor, and if it exceeds 10, the stickiness during use is severe.

  In the present invention, the content mass ratio of the component (A) and the component (D): (A) / (D) is not particularly limited, but there is no stickiness, oil unevenness over time of the impregnation composition, Preferably it is 0.15-0.5, More preferably, it is 0.2-0.4. In the component (D) that can be present in the aqueous phase and in the component (D) that can be present in the oil phase, when the content mass ratio: (A) / (D) is a specific value, the characteristic of the component (A) The stickiness can be unexpectedly suppressed by component (D). Further, when the content mass ratio: (A) / (D) is a specific value, the component (A) is also related to the oil unevenness over time of the impregnation composition resulting from the separation of the oil component including the component (D). Can effectively be suppressed at the emulsifying interface.

Component (D) in the present invention is selected from higher alcohols that are liquid at 25 ° C., higher fatty acids that are liquid at 25 ° C., and salts thereof from the viewpoint of imparting elasticity and elasticity to the skin and suppressing stickiness during use. It is preferable that the 1 type (s) or 2 or more types included are included. The content of one or more selected from higher alcohols that are liquid at 25 ° C. and higher fatty acids and salts thereof that are liquid at 25 ° C. is preferably 0 in the oil-in-water cosmetic composition. 0.001 to 5% by mass, more preferably 0.005 to 3% by mass, and still more preferably 0.01 to 2% by mass.
The “higher” of the higher alcohol and higher fatty acid has 6 or more carbon atoms, preferably 8 to 30 carbon atoms, more preferably 8 to 22 carbon atoms, and still more preferably 12 to 22 carbon atoms. Further, it may be linear or branched, saturated or unsaturated.
Examples of liquid higher alcohols at 25 ° C. include octyldodecanol (2-octyldodecanol), 2-hexyldecanol, 2-decyltetradecanol, oleyl alcohol, isostearyl alcohol, isocetyl alcohol, palm alcohol, olive alcohol, Examples include jojoba alcohol and decyltetradecyl alcohol. Of these, octyldodecanol is preferable in terms of improving stickiness.
Examples of higher fatty acids that are liquid at 25 ° C. include isostearic acid, isopalmitic acid, oleic acid, linoleic acid, and linolenic acid. Of these, oleic acid, isostearic acid, and linoleic acid are preferable in terms of improving stickiness.

[Component (E)]
As the component (E) polysaccharide thickener in the present invention, naturally occurring polysaccharides, naturally derived polysaccharides, and modified products thereof can be used. Specifically, the component (E) polysaccharide thickener is preferably a polysaccharide whose repeating unit is selected from glucose, galactose, mannose, and glucuronic acid. Although it will not specifically limit if it is normally used for cosmetics, Specifically, starch, guar gum, locust bean gum, glucomannan, cellulose, starch, guar gum, locust bean gum, xanthan gum, carrageenan, etc. are mentioned. Examples of the cellulose derivative include carboxymethylcellulose, sodium carboxymethylcellulose, methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose and the like. These polysaccharide thickeners can be used alone or in combination of two or more. Among the polysaccharide thickeners, xanthan gum and carboxymethylcellulose are those that improve the creaming of the oil-in-water cosmetic composition of the present invention and further improve separation over time in the nonwoven fabric impregnated state (occurrence of oil unevenness). , Sodium carboxymethylcellulose and hydroxypropylmethylcellulose are preferred. Among them, xanthan gum is more preferable in order to improve separation with time (generation of oil unevenness) in the nonwoven fabric impregnated state.

  Although content of the component (E) polysaccharide thickener in this invention is not specifically limited, 0.01-0.5 mass% is preferable in this oil-in-water type cosmetic composition, More preferably, it is 0.00. It is 02-0.2 mass%, More preferably, it is 0.02-0.15 mass%. If it is this range, the creaming of the composition for oil-in-water cosmetics of this invention and also isolation | separation with the lapse of time in the nonwoven fabric impregnation state (generation of oil unevenness) will be improved.

[Other ingredients]
In the oil-in-water cosmetic composition of the present invention, water, a polyhydric alcohol, and a component (B) as components contained in a normal cosmetic, if necessary, as long as the effects of the present invention are not impaired. And surfactants other than component (C), oils other than component (D) (waxes, etc.), thickeners other than component (E), film forming agents, moisturizers, antioxidants, anti-fading agents, beauty Components, preservatives, stabilizers, pH adjusters, pigments, fragrances and the like can be appropriately contained for imparting various effects.

  Examples of water that can be contained in the oil-in-water cosmetic composition of the present invention include deionized water, distilled water, purified water, hot spring water, so-called water such as plant-derived steam distilled water such as rose water and lavender water. Is mentioned.

[Form]
The oil-in-water cosmetic composition of the present invention can be used as a cosmetic liquid, sunscreen, hair styling agent, antiperspirant, cleansing, fragrance, fragrance, deodorant and the like.

  The oil-in-water cosmetic composition of the present invention can be used as a sheet cosmetic by impregnating a nonwoven fabric with the oil-in-water cosmetic composition. The sheet-like cosmetic impregnated with the oil-in-water cosmetic composition of the present invention can impart sufficient moisture and active ingredients to the skin, and can impart moisturizing and emollient effects, as well as skin beautifying effects such as elasticity and elasticity. This is preferable.

  The nonwoven fabric impregnated with the oil-in-water cosmetic composition of the present invention is a sheet entangled without weaving fibers such as natural fibers and synthetic fibers, and can be manufactured by any of wet manufacturing methods and dry manufacturing methods. The nonwoven fabric obtained by the method may be used. Examples of fibers used in the nonwoven fabric include cotton, wool, hemp, pulp, silk, rayon, nylon, polyester, polypropylene, acrylic fiber, vinylon, and aramid fiber, and these may be used alone or in combination of two or more. It can be appropriately selected and used. Among these, cotton and / or rayon are preferable in terms of stability and adhesion to the skin.

The nonwoven fabric impregnated with the oil-in-water cosmetic composition of the present invention has a thickness of 0.5 to 10 mm per sheet material and is impregnated in terms of simplicity such as adhesion and ease of peeling during use. The mass per sheet material is preferably 15 g or less, more preferably 0.7 to 5 mm in thickness and 10 g or less in mass. The basis weight of the sheet material used in the present invention is preferably 15 to 300 g / m ² and more preferably 30 to 120 g / m ² in terms of adhesion during use and suppression of peeling off. Furthermore, the area of one sheet material is preferably 1 to 400 cm ^{2 in} terms of ease of sticking and ease of peeling when sticking to a use site. The amount of impregnation into the nonwoven fabric of the oil-in-water cosmetic composition of the present invention is preferably 2 to 15 times the mass of the sheet material to be impregnated, more preferably 3 to 10 times. The method for impregnating the non-woven fabric with the oil-in-water cosmetic composition of the present invention is not particularly limited, and can be by known means.

[Average particle size]
The average particle size of the emulsified particles of the oil-in-water cosmetic composition of the present invention is preferably from the viewpoint of improvement of stickiness, suppression of creaming with time, and suppression of separation over time (occurrence of oil unevenness) in a nonwoven fabric impregnated state. , 500 nm or less, more preferably 300 nm or less. The average particle diameter of the emulsified droplets can be measured using a particle size distribution measuring apparatus (for example, manufactured by Submicron Particle Analyzer N5 BECKMAN COULTER) using a laser diffraction / scattering method.

[Production method]
The method for producing an oil-in-water cosmetic composition of the present invention is a conventional method for producing a cosmetic composition, specifically, a dispersion emulsification method, a phase inversion emulsification method, a gel emulsification method, a phase inversion method. Although it can be prepared by a temperature emulsification method or the like, it is preferable to apply a phase inversion temperature emulsification method in terms of simplicity and stability.

  Hereinafter, the present invention will be described in more detail with reference to examples. Note that these do not limit the present invention.

(Preparation of Examples 1-15 and Comparative Examples 1-6)
The composition for oil-in-water cosmetics was prepared with the composition shown in Table 1, and the following manufacturing method, they were evaluated by the following method, and the result was shown together.

(Production method)
<Phase inversion temperature emulsification method: Examples 1, 3-15, Comparative Examples 1-6>
A: Components 2 to 12 are mixed and dissolved at 80 ° C.
B: Component 19 is heated to 80 ° C.
C: A part of B is added to A to obtain an oil-in-water emulsion (phase inversion temperature: 60 ° C.).
D: Components 1, 13 to 18, and the remainder of component 19 were added to C and mixed to obtain an oil-in-water cosmetic composition.
<Dispersion emulsification method: Example 2>
A: Components 2 to 12 are mixed and dissolved at 80 ° C.
B: Component 19 is heated to 80 ° C.
C: A is added to B to obtain an oil-in-water emulsion.
D: Component 1 and components 13 to 18 were added to C and mixed to obtain an oil-in-water cosmetic composition.

(Evaluation item)
A. Average particle size b. Skin firmness and elasticity No stickiness 2. Emulsification stability e. Oil unevenness of impregnated composition over time

(Evaluation method)
(A. Average particle diameter)
About each sample, the average particle diameter was measured with the particle size distribution measuring device (submicron particle analyzer N5 BECKMAN COULTER) by the laser diffraction / scattering method, and the following evaluation criteria evaluated.
Evaluation criteria
(Judgment): (Evaluation result)
A: 500 nm or less
B: Over 500 nm and 1.0 μm or less
C: more than 1.0μ and 5.0μ or less
D: More than 5.0μ

[Ro and Ha (Sensory evaluation)]
Women in their 20s and 40s received sensory evaluation training and selected 10 professional panels that could be evaluated according to certain standards.
After applying each sample (3 ml) to the entire face, the skin's firmness, elasticity, and non-stickiness felt 2 minutes after being applied to the entire face are rated in five levels according to the following evaluation criteria. The average value was calculated from the total score, and judged according to the following four-step criteria.

(B. Evaluation of skin elasticity and elasticity)
Evaluation criteria (Score): (Evaluation)
5 points: feels skin firmness / elasticity 4 points: feels skin elasticity / elasticity 3 points: feels somewhat skin elasticity / elasticity 2 points: feels skin firmness / elasticity 1 point: I do not feel that the skin is firm or elastic. 4 step criteria (Judgment): (Average score)
◎: More than 4 points: Very good ○: More than 3 points, 4 points or less: Good △: More than 2 points, 3 points or less: Slightly poor ×: 2 points or less: Bad

(C. Evaluation of non-stickiness)
Evaluation criteria (Score): (Evaluation)
5 points: No stickiness 4 points: Little stickiness 3 points: Somewhat stickiness 2 points: Feels sticky 1 point: Very sticky 4 criteria (Decision): (Average score)
◎: More than 4 points: Very good ○: More than 3 points, 4 points or less: Good △: More than 2 points, 3 points or less: Slightly poor ×: 2 points or less: Bad

(D. Evaluation of emulsion stability)
Each sample of Examples 1 to 15 and Comparative Examples 1 to 6 was stored for 1 month under a temperature condition of 50 ° C., and then the appearance change was visually observed and judged according to the following three-stage criteria.
Three-step criteria (Judgment): (Evaluation result)
◎: No creaming / oil floating, uniform: Very good ○: Slight creaming, but no oil floating: good ×: Creaming is observed, and some oil floating is recognized: Poor

(E. Evaluation of oil unevenness over time of impregnated composition)
Changes in the state of the impregnated oil-in-water cosmetic composition over time when Examples 1 to 15 and Comparative Examples 1 to 6 were made into sheet-like cosmetics by the following {filling method} were evaluated. Specifically, each sheet-shaped cosmetic is placed vertically (placed so that the non-woven fabric sticking surface is perpendicular to the ground) and stored for 1 month at a temperature of 50 ° C. When the nonwoven fabric was taken out and spread over the entire surface, the state change of the impregnated oil-in-water cosmetic composition was visually observed and judged according to the following three-stage criteria. Moreover, in order to make separation (oil unevenness) easy to see, 0.2% by mass of Coenzyme Q10 (manufactured by Kaneka Coenzyme Q10 Kaneka Co., Ltd.) as an oily colorant is contained in the oil-in-water cosmetic composition. The oily phase was colored.

{Filling method}
The oil-in-water cosmetic compositions of Examples 1 to 15 and Comparative Examples 1 to 6 obtained by the <phase inversion emulsification method> and the <dispersion emulsification method> in (Manufacturing method) are each folded in the center. Filled and sealed in a polyethylene terephthalate bag-like container containing 30 sheets of nonwoven fabric (material: cotton, thickness: 1 mm, basis weight: 100 g / m ² , area: 200 cm ² ) to obtain a sheet-shaped cosmetic .

Three-step criteria (rating): (evaluation)
◎: Separation (oil unevenness) was not observed in the oil-in-water cosmetic composition impregnated in the nonwoven fabric, uniform: very good ○: Separation (oil in the oil-in-water cosmetic composition impregnated in the nonwoven fabric (Unevenness) is not recognized, but a slight blur is observed: Good x: Separation (oil unevenness) is observed in the oil-in-water cosmetic composition impregnated into the nonwoven fabric: Poor

As is clear from the results in Table 1, Examples 1 to 15 are superior to Comparative Examples 1 to 6 in terms of skin elasticity and elasticity, have little stickiness during use, and have good emulsification stability. Furthermore, even when the nonwoven fabric was impregnated, the occurrence of oil unevenness over time was suppressed.
The comparative example 1 which does not contain a component (A) was inferior to the firmness and elasticity of skin, and the absence of stickiness.
The comparative example 2 which does not contain a component (D) but contains cholesterol was inferior to the firmness / elasticity of the skin, non-stickiness, emulsion stability, and oil unevenness over time of the impregnated composition.
Comparative Examples 3 and 4 not containing the component (B) or the component (C) were inferior to the firmness / elasticity of the skin, non-stickiness, and oil unevenness over time of the impregnated composition.
Content ratio: Comparative Example 5 in which {(B) + (C)} / (D) exceeds 10 was inferior in skin firmness / elasticity and non-stickiness.
The comparative example 6 which does not contain a component (D) and contains cholesterol was inferior to the firmness and elasticity of skin, and the absence of stickiness.

  Furthermore, in Examples 1 to 15, it was surprising that the occurrence of oil unevenness over time of the impregnating composition was suppressed. The reason for this is that, in Table 1, in Comparative Examples 3 and 4, in terms of emulsification stability, although they were “very good” and “good”, the oil unevenness of the impregnated composition over time In Comparative example 3 and 4, both were “bad”. That is, even when the oil-in-water cosmetic composition alone has good emulsification stability over time, the oil unevenness over time of the nonwoven fabric impregnated composition is not necessarily suppressed. That is, in the emulsion composition, it can be said that the storage environment is remarkably different between a state where the nonwoven fabric is impregnated and a state where the nonwoven fabric is not impregnated. Under such circumstances, in Examples 1 to 15 of the present invention, the occurrence of oil unevenness over time of the nonwoven fabric impregnated composition was suppressed.

Example 16: Cosmetic liquid (component) (mass%)
1. Nicotinamide 4.0
2. Polyoxyethylene addition type castor oil (10E.O.) 1.0
3. Tetraoleic acid polyoxyethylene sorbit (60EO) 0.5
4). Trimethylolpropane triisostearate 0.5
5. Isononyl isononanoate 0.2
6). Jojoba oil 10.0
7). Ceramide 2 0.1
8). Astaxanthin 0.1
9. Tocopherol 0.01
10.1,3-butylene glycol 12.0
11. Glycerin 5.0
12 Methyl paraoxybenzoate 0.05
13. Acrylic acid / alkyl methacrylate copolymer (Note 1) 0.15
14 Xanthan gum 0.1
15. Sodium hydroxide 2% solution 0.2
16. Fragrance 0.1
17. Purified water remaining amount (Note 1) Carbopol 1382 polymer (manufactured by LUBRIZOL ADVANCED MATERIALS)

(Production method)
A: Heat component 17 to 80 ° C.
B: Components 2 to 9 are uniformly dissolved and mixed at 80 ° C.
C: A part of A is added to B, and an oil-in-water emulsion is obtained by a phase inversion temperature emulsification method (phase inversion temperature: 60 ° C.).
D: Add component 1, components 10 to 16, and the remainder of component 17 to C and mix.
The cosmetic liquid of Example 16 was excellent in skin firmness and elasticity, no stickiness, and emulsion stability.

Example 17: Skin lotion for skin (component) (mass%)
1. Nicotinamide 6.0
2. Polyoxyethylene addition type castor oil (40E.O.) 1.0
3. Tetraoleic acid polyoxyethylene sorbit (40E.O.) 0.7
4). Macadamia nut oil 2.0
5. Isononyl isononanoate 1.0
6). Liquid paraffin 8.0
7). Ceramide 3 0.1
8). Glyceryl caprylate 0.05
9. Tocopherol 0.01
10.1,3-butylene glycol 12.0
11. Glycerin 5.0
12 Methyl paraoxybenzoate 0.05
13. Xanthan gum 0.1
14 Sodium hydroxide 2% solution 0.2
15. Succinic acid 0.01
16. Sodium lactate 0.01
17. Fragrance 0.1
18. Purified water remaining

(Production method)
A: Heat component 18 to 80 ° C.
B: Components 2 to 9 are uniformly dissolved and mixed at 80 ° C.
C: A part of A is added to B, and an oil-in-water emulsion is obtained by a phase inversion temperature emulsification method (phase inversion temperature: 60 ° C.).
D: Add component 1, components 10-17, and the remainder of component 18 to C and mix.
The skin lotion for scalp of Example 17 was excellent in skin firmness and elasticity, no stickiness, and emulsion stability.

Example 18: Pack cosmetic (ingredient) (mass%)
1. Nicotinamide 6.0
2. Polyoxyethylene addition type castor oil (40E.O.) 0.9
3. Tetraoleic acid polyoxyethylene sorbit (40E.O.) 0.9
4). Macadamia nut oil 0.3
5. Isononyl isononanoate 1.0
6). Liquid paraffin 10.0
7). Vaseline 0.01
8). Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol 0.02
9. Tocopherol 0.01
10.1,3-butylene glycol 10.0
11. Glycerin 6.0
12 Methyl paraoxybenzoate 0.02
13. Xanthan gum 0.15
14 Citric acid 0.02
15. Sodium lactate 0.01
16. Fragrance 0.1
17. Purified water remaining

(Production method)
A: Heat component 17 to 80 ° C.
B: Components 2 to 9 are uniformly dissolved and mixed at 80 ° C.
C: A part of A is added to B, and an oil-in-water emulsion is obtained by a phase inversion temperature emulsification method (phase inversion temperature: 60 ° C.).
D: The remainder of component 1, component 10-16, and component 17 was added to C and mixed, and then 50 non-woven fabrics (material: rayon, thickness: 1.5 mm, basis weight: 100 g / m ² , area: 300 cm ² 750 g of D was filled and sealed in a bag-like container made of polyethylene terephthalate.
The pack cosmetic of Example 18 had excellent skin firmness and elasticity, no stickiness, excellent emulsification stability, and oil impregnation over time of the impregnated composition was not recognized and suppressed.

Claims (8)

The following components (A) to (D):
(A) Nicotinamide 1 to 10% by mass
(B) polyoxyethylene addition type castor oil (C) polyoxyethylene addition type sorbite fatty acid ester (D) containing liquid oil agent,
Content ratio of component (B) and component (C) to component (D): Oil-in-water cosmetic composition in which {(B) + (C)} / (D) is 1/10 to 10. Furthermore, the composition for oil-in-water cosmetics of Claim 1 whose average particle diameter of an emulsified droplet is 500 nm or less. The oil-in-water cosmetic according to claim 1 or 2, wherein the component (B) is one or more selected from polyoxyethylene addition castor oils having an average addition mole number of oxyethylene of 10 to 60. Composition for food. The said component (C) is 1 type (s) or 2 or more types chosen from the polyoxyethylene addition type | mold sorbit fatty acid ester whose average addition mole number of oxyethylene is 10-60. Oil-in-water cosmetic composition. Furthermore, the composition for oil-in-water cosmetics in any one of Claims 1-4 containing a component (E) polysaccharide thickener. 6. The oil-in-water cosmetic composition according to claim 5, wherein the component (E) is xanthan gum. Content ratio of said component (A) and said component (D): (A) / (D) is 0.15-0.5 For oil-in-water cosmetics in any one of Claims 1-6 Composition. A sheet-like cosmetic comprising a nonwoven fabric impregnated with the oil-in-water cosmetic composition according to any one of claims 1 to 7.