JP2565390B2 - Solid powder cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to solid powder cosmetics, and more specifically, to powders and diglycerides and polyol moisturizers which are liquid at room temperature The present invention relates to a solid powder cosmetic having good adhesion to the skin, excellent moisturizing properties, and excellent durability of cosmetic effects.

[Conventional technology]

The solid powder cosmetic contains a powder component and an oil component as main components, and if necessary, a moisturizer, a fragrance, a medicinal agent, etc. are added, and these components are mixed, crushed, and press-filled. It is a cosmetic mainly used for make-up.

Conventional solid powder cosmetics have a powder component composition ratio of 70 to 95.
It accounts for about wt%, and its components are, for example, talc,
Various inorganic powders such as mica, titanium mica, sericite and titanium oxide have been used. Further, as a component other than powder, for the purpose of a binder, only an oil agent such as squalane or liquid paraffin is used, or the above oil agent and a hydrophilic moisturizing agent such as glycerin or 1,3-butylene glycol are used as a suitable interface. A uniform emulsion with an activator (such as sorbitan sesquioleate) has been used.

[Problems to be Solved by the Invention]

However, since the powder component used in the conventional solid powder cosmetics does not have a water-retaining ability by itself, a powder cosmetic containing a large amount of such powder is not suitable for skin during the dry season of autumn and winter. However, they have the drawbacks of being bulky and having insufficient adhesion. In addition, the oil blended as a binder only prevents water evaporation from the skin due to the blocking effect, does not have a positive moisturizing effect, and even if a hydrophilic moisturizing agent is used in combination, it penetrates into the stratum corneum of the skin. No, it remains on the skin. Therefore, the conventional solid powder cosmetics have the drawbacks of insufficient moisturizing effect and temporary effect.

[Means for solving the problem]

The present inventors, in view of such circumstances, as a result of earnest studies, when not only excellent moisturizing properties, but also skin, when the powder component was blended with a liquid diglyceride and a polyol-based moisturizing agent at a certain ratio. The present invention was completed by finding that a solid powder cosmetic having excellent adhesion and durability of makeup effect can be obtained.

That is, the present invention provides the following components (A), (B) and (C) (A) powder 70 to 99% by weight (B) diglyceride in liquid state at room temperature (C) free mixing with component (B) at room temperature It contains a possible polyol moisturizing component, and the weight ratio of (B) component: (C) component is from 10: 1 to 1: 1.
The solid powder cosmetic is characterized in that the total amount of the component (B) and the component (C) is 1 to 30% by weight.

As the powder as the component (A) of the present invention, powders generally used as cosmetics can be used. For example, extenders such as talc, kaolin, sericite and silicic acid anhydride; titanium oxide, zinc oxide, Inorganic pigments such as iron oxide and ultramarine; Pearl pigments such as mica titanium and mica; Blue No. 404,
Examples include organic pigments such as red No. 202 and yellow No. 401; metal soaps such as magnesium stearate and zinc palmitate; synthetic resins such as nylon. These powders may be used singly or as a mixture of two or more kinds, and the compounding amount is 70 to 99% by weight based on the total amount of the solid powder cosmetic of the present invention, although it depends on the kind of the cosmetic. 80 to 95% by weight is preferred.

The component (B) used in the present invention, which is liquid at room temperature, has a melting point of 20 ° C. or lower. This is, for example, fatty acid glycerin ester (diester content obtained by a general production method such as esterification of glycerin fatty acid, glycerylsis of glycerin and natural animal or vegetable oil or hardened natural animal or vegetable oil or fat, or glycerolysis of higher fatty acid higher alcohol ester and glycerin. (60% or more) is separated and purified by molecular distillation, solvent extraction, etc. Among these, di (2-ethylhexanoic acid) glycerin ester, dioctanoic acid glycerin ester, dioleic acid glycerin ester, and myristic acid / isostearic acid glycerin ester are particularly preferable.

The polyol-based moisturizing component as the component (C) needs to be arbitrarily mixable with the diglyceride as the component (B) at room temperature, and specifically, for example, polyethylene glycol, polypropylene glycol, dipropylene glycol, propylene glycol. , Butylene glycol,
Examples thereof include hydroxypropyl etherified glycolipid ester (PSL). In particular, considering the solubility characteristics of the hydrophilic moisturizing component optionally mixed in the solid powder cosmetic of the present invention, for example, glycerin, sorbitol, maltitol, amino acid, urea, hyaluronic acid, dipropylene glycol, butylene glycol. Is particularly preferable. Also,
Examples of the above PSL include those represented by the following general formula (I).

(In the formula, R ¹ represents CH ₃ or H, and when R ¹ is CH ₃ , R ² represents C ₁₁
To C ₁₅ saturated or unsaturated hydrocarbon group, when R ¹ is H, R ² represents a C _{12 to} C ₁₆ saturated or unsaturated hydrocarbon group,
A is R ³ is a C ₁ -C ₂₀ saturated hydrocarbon group or (A) _h H
And a, b, c, d, e, f, g, h represent the sum of integers of 1 to 60.) The weight ratio of the components (B) and (C) is 10: 1 to 1:20. And
If it deviates from this range, the moisturizing property, the adhesiveness, the durability of the cosmetic effect and the effects of the present invention will not be sufficiently exhibited. Also,
The total amount of the components (B) and (C) must be 1 to 30% by weight based on the total amount of the solid powder cosmetic, and if the amount is less than 1%, the effect of the present invention is obtained. Not obtained again 30
Even if it is blended in excess of%, the effect will not be further increased, or rather it will become clay-like and the commercial value will decrease.

In the solid powder cosmetic of the present invention, oil components, surfactants, humectants, UV absorbers, chelating agents that are generally used as cosmetic ingredients in addition to the above essential components within the range that does not impair the effects of the present invention. Ingredients commonly used in cosmetics such as a pH adjuster, an antiseptic, and a fragrance can be appropriately mixed.

Examples of the solid powder cosmetic of the present invention include powder foundation, pressed powder, blusher, and powder eye shadow.

The solid powder cosmetic of the present invention comprises, for example, a mixture of an oil phase component containing the component (B) and an aqueous phase component containing the component (C), which is added to the powder component of the component (A). It is manufactured by mixing, crushing, crushing, and then filling in a container.

〔The invention's effect〕

The solid powder cosmetic of the present invention is a cosmetic having high moisturizing properties, good adhesion to the skin, and excellent durability of the cosmetic effect.

〔Example〕

Hereinafter, the present invention will be described in more detail by showing Examples of the present invention, but the present invention is not limited to these Examples.

Example 1 A powder foundation shown in Table 1 below was produced by the following production method, and its moisturizing property (moisturizing feeling), adhesion to skin (sticking to skin, familiarity), and durability of cosmetic effect were obtained. (Makeup mochi) was tested by the following test method. The results are shown in Table 2.

(Production method) The powder components 1) to 7) shown in Table 1 are mixed with a Henschel mixer and pulverized with an atomizer. Separately 8)
The oil phase and water phase components of 15 to 15) are uniformly mixed, and this is added to the above powder component and mixed with a Henschel mixer, and then pulverized again with an atomizer. This is a comparative product by filling and molding this into a medium plate
Powder powders of 1, 2 and products 1 and 2 of the present invention were obtained.

(Test method) (1) Moisturizing effect A certain amount of each of the solid powder cosmetics of the present invention product and the comparative product was applied to the inner part of the forearm, allowed to stand for 4 hours, washed with a cleansing agent, and the temperature was 20 ° C. After entering the constant temperature and humidity room with a humidity of 40%, 15 minutes later, the water content in the stratum corneum was measured with an impedance meter (manufactured by IBS). The skin water content was shown as an average value (N = 10) when the non-application site was 100.

(2) Practical test (panel test) Twenty women aged 20 to 40 were used as subjects, and they felt moisturized (moisturizing), adhered to the skin, became familiar (adhesion to the skin), and had a make-up effect (makeup effect). Persistence) was evaluated according to the following evaluation criteria.

○: The number of people who answered good is 15 or more △: 〃 7 to 14 people ×: 〃 6 people or less Example 2 A pressed powder having the following composition was produced by the following production method.

(Manufacturing Method) The above powder components are mixed with a Henschel mixer and pulverized with an atomizer. Next, the above oil phase and water phase components are uniformly mixed, and this is added to the above pulverized product and mixed by a Henschel mixer, and then pulverized again by an atomizer. This was filled and molded in an inner plate to obtain a pressed powder (invention product 3).

Example 3 A cheek roe having the following composition was produced by the following production method.

(Manufacturing Method) The above powder components are mixed with a Henschel mixer and pulverized with an atomizer. Next, the above oil phase and water phase components are uniformly mixed, and this is added to the above pulverized product and mixed by a Henschel mixer, and then pulverized again by an atomizer. This was filled into an inner plate and molded to obtain cheek red (Product 4 of the present invention).

Example 4 A powder eye shadow having the following composition was manufactured by the following manufacturing method.

(Manufacturing Method) The above powder components are mixed with a Henschel mixer and pulverized with an atomizer. Next, the above oil phase and water phase components are uniformly mixed, and this is added to the above pulverized product and mixed by a Henschel mixer, and then pulverized again by an atomizer. This was filled in a medium plate and molded to obtain a powder eyeshadow (Invention product 5).

All of the products 3 to 5 of the present invention prepared in Examples 2 to 4 were cosmetics having good density on the skin, excellent moisturizing properties, and long lasting cosmetic effects.

Claims (1)

(57) [Claims] 1. The following components (A), (B) and (C) (A) powder 70 to 99% by weight (B) diglyceride in liquid form at room temperature (C) free mixing with component (B) at room temperature It contains a possible polyol moisturizing component, and the weight ratio of (B) component: (C) component is from 10: 1 to 1: 1.
20. A solid powder cosmetic, wherein the total amount of the component (B) and the component (C) is 1 to 30% by weight.