JPH04124117A - Cosmetic - Google Patents

Abstract

PURPOSE:To obtain an oil-in-water type gel-like cosmetic, excellent in feeling when used and also in, safety and stability without impairing performance of hydrophobic powder by slowly adding a lot of oil phase in which hydrophobic powder is suspended to an aqueous solution. CONSTITUTION:The objective oil-in-water type gel-like cosmetic containing (A) 0.01-5wt.% nonionic, anionic, cationic or amphoteric surfactant, (B) 0.5-40wt.% water, (C) 40-98wt.% liquid oil, preferably squalane, glycerol di(or tri) ester or a dimethylpoly-siloxane of 4-membered ring or 5-membered ring and (D) 0.01-50wt.% hydrophobic powder (containing powder obtained by subjecting the surfaces of inorganic powder and organic powder to a hydrophobic treatment) and being >=60wt.%, preferably >=70wt.% in total blend amount of the components C and D. Each component is preferably blended at amounts of the component A of 0.1-3wt.%, the component B of 2-25wt.%, the component C of 60-90wt.%, the component B of 2-25wt.%, the component C of 60-90wt.% and the component D of 0.1-25wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an 0/W type gel cosmetic containing a large amount of liquid oil and hydrophobic powder and having excellent stability and good feel. .

[Problems to be solved by conventional techniques and inventions] Conventionally,
By incorporating powder into cosmetics, it has functions such as coloring the skin and hair, removing stains and freckles, protecting the skin from ultraviolet rays, and absorbing sweat and sebum. In particular, emulsified cosmetics have a good feel and multifunctionality, so they can be blended with powder to create various cosmetics, such as emulsified foundations, UV protection emulsions, etc.
It is used as a cream.

On the other hand, in recent years, hydrophobic powders and hydrophobically treated powders have been used for the purpose of improving the adhesion of powders to the skin and imparting water (sweat) resistance. However, in order to stably incorporate these hydrophobic powders into emulsified cosmetics, it is necessary to increase the viscosity of the oil phase as a dispersion medium, increase the amount of emulsifiers and dispersants used, etc.
As in Japanese Patent No. 246312, polyether-modified silicone must be used as an emulsifier, and it has a good feel.
Moreover, it was difficult to obtain one that could stably hold powder.

It is known that an increase in the viscosity of the oil phase causes a worsening of the feeling of use, and an increase in the amount of emulsifiers and dispersants used causes undesirable phenomena such as a decrease in safety and a decrease in hydrophobic performance.

Therefore, it does not impair the performance of hydrophobic powder and has excellent usability.
In addition, a stable emulsified powder-containing cosmetic has been desired.

[Means to solve the problem]

Under these circumstances, the present inventors conducted intensive research and found that a ○/W type gel can be obtained by slowly adding a large amount of an oil phase in which hydrophobic powder is suspended in an aqueous surfactant solution while stirring. The present invention was completed based on the discovery that the non-gel cosmetic hydrophobic powder does not impair its performance and has excellent usability, safety and stability.

That is, the present invention includes the following components (a) to (d) (a)
Surfactant 0.01-5% by weight etc.) Water
Contains 0.5-40% by weight (c) Liquid oil 40-98% by weight (d) Hydrophobic powder 0.01-50% by weight, and (
The total amount of component c) and component (d) is 60% of the total composition.
% by weight or more, O/W type Ge JL.

The purpose of the present invention is to provide a cosmetic material characterized in that it exhibits a shape.

The (a) component surfactant used in the present invention is as follows:
For example, monoglyceride, sorbitan fatty acid ester,
Sucrose fatty acid ester, polyglycerin fatty acid ester, alkanolamide, amine oxide, polyoxyethylene alkyl ether, polyethylene glycol fatty acid ester, polyoxyethylene sorbitan fatty acid ester, Pluronic, polyoxyethylene glycerin monofatty acid ester, polyoxyethylene propylene glycol mono Nonionic surfactants such as fatty acid ester, polyoxyethylene hardened mustard oil, polyoxyethylene fatty acid amide, polyoxyethylene alkylamine, alkyl saccharide; alkyl sulfate ester salt, alkyl ether sulfate, fatty acid soap, ether Carboxylic acids and their salts, alkanesulfonates, α-olefin sulfonates, sulfonates of higher fatty acid esters, dialkyl sulfosuccinates, monoalkyl sulfosuccinates, polyoxyethylene monoalkyl sulfosuccinates, higher fatty acid amides Anionic surfactants such as sulfonates, sulfate ester salts of glycerin fatty acid esters, sulfate ester salts of higher fatty acid alkylolamides, and acylated amino acid salts; alkyltrimethylammonium salts, dialkyldimethylammonium salts, alkyldimethylbenzylammonium salts , alkylpyridinium salt,
Examples include cationic surfactants such as alkylisoquinolinium salts; amphoteric surfactants such as imidacilline type, amide amino acid salt, alkylbetaine type, and alkylsulfobetaine type.

These surfactants can be used alone or in combination of two or more, and are 0.01 to 5% by weight (hereinafter simply expressed as "%") in the total composition, preferably 0.1 to 3% by weight. % is added. If it is less than 0.01%, a stable emulsion will not be formed, and if it exceeds 5%, the hydrophobicity of the powder will be affected, which is not preferable.

Component (b) water is used as a ladle to dilute the surfactant component (a), and its amount is not particularly limited, but it should be 0.5 to 40%, preferably 2% in the total composition. ~25
% is added. If it is less than 0.5%, the feel will be poor, and 40%
%, a stable emulsion will not be formed and this is not preferred.

The liquid oil of component (c) is not particularly limited as long as it is a liquid oil at 25°C, such as volatile cyclic silicone such as four-membered and five-membered rings, dimethylpolysiloxane of 1 to 1000 cs, 1000 cs or less Examples include hydrocarbons such as methylphenylpolysiloxane, squalane, and liquid halaffin, branched alcohols, branched fatty acids, higher fatty acid esters, benzoic acid esters, triglycerides, diglycerides, and rosin derivatives. Among these, particularly preferred are squalane, 2-
One or two types of glycerin diesters of fatty acids such as ethylhexanoic acid, myristic acid, oleic acid, and isostearic acid; one or two or more types of fatty acids such as 2-ethylhexanoic acid, myristic acid, oleic acid, and isostearic acid; Examples include glycerin triester, octyldodecyl myristate, isopropyl myristate, four- and five-membered ring dimethylpolysiloxane, dimethylpolysiloxane of 100 cs or less, methylphenylpolysiloxane, and the like. Note that liquid state at 25°C means that a flat-bottom test tube with an inner diameter of 30 mm and a height of 120 mm is placed in a constant temperature water bath at 25°C with marked lines at a height of 55 mm (line A) and 85 mm (line B) from the bottom of the tube. Pour the sample into the container marked with , up to the height of line A, leave it for at least 10 minutes after the sample reaches 25°C, then place it on a horizontal table and measure the time it takes for the top of the liquid to reach line B. Indicates that the time is within 90 seconds.

These liquid oils can be used alone or in combination of two or more, and the total composition contains 40 to 98%, preferably 60%
~90% blended. If it is less than 40%, emulsification cannot be achieved and the feel is poor, and if it exceeds 98%, stability deteriorates, which is not preferable.

(6) In addition to normal hydrophobic powders, the hydrophobic powders used as the component include hydrophobic powders obtained by hydrophobicizing the surface of one or more powders selected from inorganic powders and organic powders. Also includes treated powder. Examples of surface treatment methods include adsorption of fats and oils onto the powder surface, oil and fat treatment methods that use functional groups such as hydroxyl groups to cause esterification and etherification to make the powder lipophilic, and zinc salts of fatty acids. Examples include a metal soap treatment method using a magnesium salt, a silicone treatment method using dimethylpolysiloxane or methylhydrogen polysiloxane, and a treatment method with a fluorine-containing polymer such as a perfluoroalkyl group. In addition, the powders to be treated include anhydrous silicic acid, magnesium silicate, talc, kaolin, mica, titanium mica, bismuth oxychloride, zirconium oxide, zinc oxide, titanium oxide, precipitated calcium carbonate, yellow iron oxide, red iron oxide, Black iron oxide, iron oxide, chromium oxide, chromium hydroxide, carbon black, calamine, loess, polyamide, polyester, polyethylene, polypropylene, polystyrene, polyurethane, epoxy resin, carbonate resin, melamine resin, acrylic acid resin,
Examples include silicone resins, fluororesins, vinyl resins, urea resins, phenol resins, and organic dyes.

These hydrophobic powders can be used alone or in combination of two or more, and are blended in the total composition in an amount of 0.01 to 50%, preferably 0.1 to 25%. At less than 0.01%,
It is difficult to obtain this effect, and if it exceeds 50%, it is difficult to obtain a stable product, which is not preferable.

The total amount of component (c) and component (6) must be 60% or more, preferably 70% or more of the total composition. If it is less than 60%, it is difficult to achieve O/W type non-gelling.

In addition to the above-mentioned essential ingredients, the cosmetics of the present invention also include ingredients used in ordinary cosmetics, such as moisturizers, solid oils,
Waxes, blood circulation promoters, cooling agents, ultraviolet absorbers, antiperspirants, bactericidal agents, skin activators, anti-aging agents, fragrances, coloring agents, etc. can be blended within the range that does not impair the effects of the present invention. .

The cosmetic of the present invention is in gel form, that is, at 25°C
It is an O/W type gel-like material exhibiting a viscosity of 0.000 cs or more, but in order to obtain such a gel-like material, for example (a
) component and (b) component, and optionally any aqueous components are uniformly dissolved in the aqueous phase, (c) component (d) is added to the liquid oil.
Preferably, it is produced by slowly adding, under stirring, an oil phase in which hydrophobic powders of the ingredients are suspended. The cosmetics of the present invention thus obtained include, for example, basic cosmetics such as skin care gel, cleansing gel, and ultraviolet protection gel; makeup cosmetics such as foundation, mascara, and nail enamel; and hair care Geno Mutsu Shampoo time dyeing. It can be applied as hair cosmetics such as hair preparations.

[Action and effect]

The cosmetic of the present invention has a hydrophobic powder dispersed in an oil phase, and ○
/W-type emulsion allows the hydrophobic powder to be extremely stably blended into emulsified cosmetics. This is thought to be because, since the powder is dispersed in a fine discontinuous phase, unfavorable phenomena such as agglomeration and precipitation are less likely to occur.

Therefore, the cosmetic composition of the present invention does not impair the performance of the hydrophobic powder and has excellent usability, safety, and stability.

〔Example〕

Next, the present invention will be explained in more detail with reference to Examples.
The present invention is not limited to these examples.

Example 1 A ○/W type gel emulsion containing hydrophobic powder having the composition shown in Table 1 was produced, and its stability was evaluated.

(Composition) (Production method) Slowly add the oil phase to the water phase while stirring. Stirring was continued for an additional 30 minutes after the addition.

(result) It was stored at 40°C for 7 days and evaluated based on appearance.

Table 2 Example 2 Hydrophobic powder-blended 0/W type gel emulsions having the compositions shown in Table 3 were produced by different methods, Method A or Method B, and their appearance was evaluated.

Margins below (composition) Table (manufacturing method) Both A and B were manufactured so that the final composition amount was 1000 g.

A: Add component 4 to the aqueous phase in which components 1 to 3 are uniformly dissolved, while stirring.
An oil phase in which component 7 was suspended in the homogeneous mixture of ~6 was added slowly (150 g/min), and stirring was continued for an additional 60 minutes.

B: Components 1 to 7 were weighed and mixed and then stirred for 60 minutes under the same conditions.

(Results) A: A gel-like O/W type emulsion with a final viscosity of about 30.000 cs (B type viscometer) was obtained.

B: The aqueous phase and oil phase remained completely separated, and powder was further precipitated in the oil phase. (Unusable) Example 3 Foundation: ◯/W type emulsion foundations having the compositions shown in Table 4 were manufactured, and the performance of each was evaluated. The results are shown in Table-5.

The following margin (manufacturing method) - Present invention life and comparison C Ingredients 5 to 7 are added to the aqueous phase in which components 1 to 4 are uniformly dissolved, while stirring.
An oil phase in which components 8 to 10 were suspended was slowly added to the homogeneous mixture, and stirring was continued for an additional 60 minutes.

・Comparison B An aqueous phase in which components 1 to 4 were uniformly dissolved and an oil phase in which components 8 to 10 were suspended in a uniform mixture of components 5 to 7 were mixed,
Stir for a minute.

(result) Comparison B had complete separation and could not withstand the evaluation.

The present invention D'J6 and the comparison C 0 were given to 10 female panelists.
/ Have them actually use the W-type emulsification foundation,
The evaluation items shown in Table 5 were evaluated according to the following criteria.

(Evaluation criteria) 1.Ease of application ◎: Spreads well and is easy to apply ○: Slightly spreadable and easy to apply △: Slightly spreadable and difficult to apply ×: Spreads hard and difficult to apply 2. Feeling immediately after application ◎: Smooth and good ○: Slightly smooth △: Slightly sticky ×: Sticky and poor quality 3. Makeup stick ◎: Makeup does not come off ○: Makeup hardly stays on. △: Makeup is a little off. X: Makeup is ruined * 40℃, 3 in a room with 75% RH Observe after 0 minutes.

Example 4 UV protection skin care gel: A UV protection skin care gel was manufactured using the following formulation.

The obtained skin care gel had a light and good feel on use, and was also excellent in appearance and stability.

(Production method) Components 6 to 5 are added to the aqueous phase in which components 1 to 5 are uniformly dissolved while stirring.
Component 10 was suspended in a homogeneous mixture of Component 9, the 9 oil phase was slowly added thereto, and stirring was continued for an additional 30 minutes.

(Formulation) Example 5 Ultraviolet Protection Hair Care Gel An ultraviolet protection hair care gel was manufactured using the following formulation.

The obtained hair care gel has good usability and is stable.
The effect of the oil made the hair shiny, and the brushing care effect was also very good.

(Manufacturing method) Components 4 to 3 are added to the aqueous phase in which components 1 to 3 are uniformly dissolved while stirring.
The oil phase in which component 7 was suspended was slowly added to the homogeneous mixture of component 6, and stirring was continued for an additional 60 minutes.

Example 6 Makeup base gel: A makeup base gel was manufactured using the following formulation.

Using the resulting makeup base gel will even out your skin texture,
The border type foundation applied well, had the effect of making makeup last longer, and had good stability.

(Production method) Components 5 to 4 are added to the aqueous phase in which components 1 to 4 are uniformly dissolved under stirring.
An oil phase in which component 8.9 was suspended in the homogeneous mixture of component 7 was slowly added, and the mixture was further stirred for 60 minutes.

Margin below (prescription) Example 7 Cleansing gel: A cleansing gel was manufactured using the following formulation.

When you apply an appropriate amount of the resulting cleansing gel and perform pine surgery, the oily stains will be lifted by the gel. When these were rinsed under running water, the oily stains and gel were completely removed in the form of white cloudy water. Oil-based stains lifted very quickly, dirt could be easily removed even from within the skin grooves, and the product was extremely refreshing after washing.

(Production method) Components 5 to 4 are added to the aqueous phase in which components 1 to 4 are uniformly dissolved under stirring.
An oil phase in which components 9 and 10 were suspended in a homogeneous mixture of components 8 and 8 was slowly added, and the mixture was further stirred for 60 minutes.

Margins below (prescription) Example 8 Gel-like foundation: A foundation with strong coverage was manufactured using the following formulation.

Although the obtained foundation was a gel type, it became liquid when applied and turned into a powder leaf amplifier over time, so the makeup did not easily come off and had a light feeling on use.

(Production method) Components 6 to 5 are added to the aqueous phase in which components 1 to 5 are uniformly dissolved while stirring.
An oil phase in which components 10 to 12 were suspended in the homogeneous mixture of component 9 was slowly added, and the mixture was further stirred for 60 minutes.

Margin below (prescription) Below Up

Claims (1)

[Claims] 1. The following components (a) to (d) (a) Surfactant 0.01 to 5% by weight (b) Water 0.5 to 40% by weight (c) Liquid oil 40 to 98% by weight (d) contains 0.01 to 50% by weight of hydrophobic powder, and the total amount of components (c) and (d) is 60% by weight or more of the entire composition, and O/W A cosmetic characterized by exhibiting a gel-like appearance.