JPS6075406A - Powdery solid cosmetic - Google Patents

Abstract

PURPOSE:To provide a powdery solid cosmetic effective to remarkably improve the irritation to the skin and to suppress the drying of the skin, by adding a specific amount of a humectant to a powdery solid cosmetic containing specific amounts of powder and an oil component containing a solid oil component. CONSTITUTION:The objective powdery solid cosmetic contains (A) 30-70wt%, preferably 40-60wt% oil component containing a solid oil component (an oil component having a melting point of >=40 deg.C), (B) 0.5-25wt%, preferably 3- 20wt% humectant such as polyhydric alcohol having two or more hydroxyl groups, a lactate, a pyrrolidonecarboxylic acid salt, a hyaluronic acid salt, a chondroitin sulfate, an amino acid salt and/or urea, etc. and (C) 25-65wt%, preferably 35-55wt% powder, as essential components. The addition of the humectant is effective to remarkably improve the safety to the skin, to suppress the drying of the skin, and to keep the skin in a refreshing and moistened state.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides polyhydric alcohols having 21 [1121" dihydroxyl groups in the molecule, lactate, pyrrolidone carboxylate,
Hyaluronate, chondroitin sulfate, amino acid salt,
The present invention relates to a solid powder cosmetic containing a moisturizing agent such as urea, the main ingredients of which are an oil containing a solid oil and a powder.

Here, solid powder cosmetics refer to cosmetics mainly used for make-up that contain oil and powder containing solid oil as main ingredients, and are filled into containers such as medium plates by pouring and molding. . Generally, the content of the oil including the solid oil and the powder is 30 to 70% by weight and 65% by weight, respectively.
~25% by weight.

Conventionally, this type of solid powder cosmetic has been called oil-based foundation silon, etc., and has been popular during the fall and winter seasons when skin tends to be dry. However, because this type of solid powder cosmetic has a high oil content, many consumers complain of irritation such as itching and stinging when used on the skin (improvements were desired. Solid powder cosmetics only prevent moisture from evaporating from the skin through the sealing effect of the oil containing the solid oils mentioned above, and do not have an active moisturizing effect, so they are especially suitable for the autumn and winter months when the skin tends to be dry. It was still not enough to keep the skin moist and fresh.

The inventors of the present invention conducted extensive research in view of the above circumstances, and as a result,
It is surprising that when a moisturizer is added to a solid powder cosmetic whose main ingredients are powder and oil containing the above-mentioned solid oil, it can significantly reduce skin irritation, suppress dryness, and keep the skin moist and fresh. The inventors have discovered that the object can be achieved and have completed the present invention.

That is, the present invention is a solid powder cosmetic characterized by containing the following three components.

(A) Oil content including solid oil content: 30 to 70% by weight (B) Humectant: 0.5 to 25% by weight (C) Powder: 25 to 65% by weight Below, the structure of the present invention will be described.

The solid oil used in the present invention is an oil with a melting point of 40°C or higher, and is selected from among higher alcohols, higher fatty acids, hydrocarbons, various esters including natural waxes, and various glycerides including natural oils and fats. One or more of C or more may be arbitrarily selected and used. Examples of these solid oils include cetyl alcohol, stearyl alcohol, stearic acid, behenic acid, solid paraffin, microcrystalline wax, polyethylene powder, candelilla wax, peace wax, carenauba wax, varicowasox, hydrogenated castor oil, and the like. Can be done.

The blending amount of the oil component is 1 to 60% by weight based on the total amount of the solid powder cosmetic of the present invention.

The oils other than the solid oils used in the present invention are oils commonly used in cosmetics, such as vegetable oils, animal oils, mineral oils, synthetic ester oils, and synthetic silicone oils. Examples of these include, for example, olive oil, jojoba oil, castor oil, lanolin and its derivatives, squalane, liquid paraffin, petrolatum, l-rimethylolbroban triisostearate, isopropyl myristate, glycerol.
-edylhexanoate, pentaerythritol tetra-2-ethylhexanoate, dimethylpolysiloxane, polyphenylmethylsiloxane, and the like. In the present invention, one or more of these may be arbitrarily selected and used.

The amount of the total oil content including solid oil content is 35 to 70% by weight, preferably 40 to 60% by weight based on the total amount of the solid powder cosmetic of the present invention.
Weight%.

The humectants used in the present invention are ethylene glycol, polyethylene glycol, propylene glycol, 1,3-
Polyglycerin such as butylene gellicol, 1,4-butylene gellicol, dipropylene glycol, glycerin, diglycerin, triglycerin, tetraglycerin,
Glucose, maltose, xylitol, sorbitol, maltose, maltitol, sidi sugar, fructose,
Polyhydric alcohols having a hydroxyl group of 211N1 or more in the molecule, such as xylitol, sorbitol, maltotriose, threitol, erythritol, starch-degrading sugar, starch-degrading sugar-reduced alcohol, and lactate, pyrrolidone carboxylate, hyaluronate, chondroitin sulfate These include salts, amino acid salts, urea, etc. In the present invention, one or more of the above may be arbitrarily selected and used.

The blending amount is 0.5 to 25% of the total amount of the solid powder cosmetic of the present invention.
% by weight, preferably 3-20% by weight.

The powder used in the present invention includes powders generally used in cosmetics, such as extender pigments such as talc, mica, clay, and kaolin, inorganic pigments such as titanium oxide, zinc white, iron oxide, and ultramarine, and titanium-mica powders. Examples include pearl pigments such as pearl pigments, and organic pigments such as Red No. 226, Blue No. 404, and Yellow No. 401. In the present invention, one or more of the above powders may be arbitrarily selected and used.

The blending amount is 25 to 65% by weight, preferably 35 to 55% by weight, based on the total amount of the solid powder cosmetic of the present invention.

The solid powder cosmetic of the present invention may be composed only of the above-mentioned essential components, but in addition, polyhydric alcohol fatty acids such as sorbitan fatty acid ester, glycerin fatty acid ester, sorbitol fatty acid ester, polyglycerin fatty acid ester, sugar fatty acid ester, etc. POE polyhydric alcohol fatty acid esters such as esters and polyoxyethylene (hereinafter abbreviated as POE) sorbitan fatty acid esters, POE glycerin fatty acid esters, POE sorbitol fatty acid esters, POE polyglycerin fatty acid esters, POE sugar fatty acid esters, hydrogenated castor oil derivatives, etc. If one or more nonionic surfactants are blended,
The powder wets the oil well, making manufacturing and filling operations easier.

Among the surfactants described in 1., those that are oil-soluble and liquid at room temperature are particularly preferred. Furthermore, although the solid powder cosmetic of the present invention can be produced by sequentially mixing the above-mentioned essential components without any special consideration, it can be made more stable by using the following production method using the surfactant described in 1. solid powder cosmetics can be produced. First, a surfactant and a humectant are stirred and mixed, and an oil component excluding solid oil components is added to this mixture to produce a gel. This method further includes the steps of adding powder to the gel, heating after mixing, adding solid oil dissolved by heating in the same manner, and cooling.

When the above-mentioned surfactant is blended, the blending amount is generally 0.1 to 5% by weight based on the total amount of the solid powder cosmetic of the present invention.

In addition to the above-mentioned essential ingredients and surfactants, the solid powder cosmetic of the present invention includes common ingredients used in cosmetics,
For example, one or more of water, preservatives, bactericidal agents, pigments, fragrances, ultraviolet absorbers, drugs, sequestrants, and the like may be added within a range that does not impair the effects of the present invention.

As mentioned above, conventional solid powder cosmetics have been formulated with oils including solid oils, powders, and other additives as necessary, but none have been formulated with humectants.

The present invention is the first to incorporate a moisturizing agent into the solid powder cosmetic, which not only greatly improves skin safety, but also suppresses dryness of the skin and is an innovative product that keeps the skin moist and fresh. It can be said to be a solid powder cosmetic.

Next, the present invention will be explained in more detail based on examples.

The blending amount is in weight%.

Example 1 Foundation Gin ■Liquid paraffin 50 ■Polyethylene glycol 400 1 ■Mica 19 ■Titanium oxide 15 ■Iron oxide (red, yellow, black) 5 ■Microcrystalline socks 10 Production methods ■～■ Stirred and mixed Add ■～■ and heat to 70℃. To this was added (1) which had also been heated and dissolved at 70°C, and after stirring and mixing, the mixture was poured into a medium plate and cooled.

Comparative Example 1 Comparative Example 1 was obtained in the same manner as in Example 1, except that polyethylene glycol 400 was removed from Example 1 and replaced with liquid paraffin.

Example 2 Example 2 was obtained in the same manner as Example 1 except that the amount of foundation polyethylene glycol 400 was 3% by weight (adjusted with liquid paraffin).

Example 3 Example 3 was obtained in the same manner as in Example 1 except that the amount of foundation polyethylene glycol 400 was 25% by weight (adjusted with liquid paraffin).

Effect (1) Test method 2 month old hairless mice (3 mice per sample)
Apply Example 2.3 or Comparative Example 2 for 0.05 m to the back skin of
1.Apply 5 times a week, total 10 times in 2 weeks
Applications were made twice. For skin reactions, determine the degree of skin roughness and desquamation according to the following criteria immediately before applying the test substance every day.

One that shows no change at all------
--Old and old 0Those with slight changes--
----------------1 Items with obvious changes -1・----1st use-Old-2 Items with significant changes----------------------- ---3 Those in which very significant changes have been observed -------4 Add up the 10 judgments of skin roughness and desquamation for each animal, and
The average value obtained by dividing this by the number of animals was defined as skin irritation.

(2) Results Example 1
−−−−−−−−−−−−2.5 Example 2−−−−−−
−−−−−−−−−−−−−−−−−−−−−−−
---1,5 Example 3 ・・−・・−−−1−−−−
−−−・−１−−〜−−−・−−−−−・−Old −1,0
Comparative example 1 ・−1−−−−−・−1−−〜−−・−・・
It is clear that the skin safety is significantly improved by incorporating the 4,0 moisturizer.

Example 4 Foundation 0 ■Liquid paraffin 33 ■Diglyceryl diisostearate 2■1,3-butylene glycol IO ■Mica 25 ■Titanium oxide 15 ■Iron oxide (red, yellow, black) 5 ■Solid paraffin 10 Production method ■～■ Add ■ to and mix thoroughly. This was added to ■■■ mixed and dissolved at 70°C, stirred and mixed, filled into a medium dish, and then cooled.

Comparative Example 2 Comparative Example 2 was obtained in the same manner as in Example 4, except that the foundation 1.3-butylene gellicol was removed (replaced with liquid paraffin).

effect 11 Usability A usage test was conducted with 20 women aged 20 to 40.

As a result, 15 people said that Example 1 was more moist than Comparative Example 1, 1 to 5 people said that it was about the same, and 0 people said that Comparative Example 1 was more moist than Example 1. Therefore, Example 1 was clearly superior.

(2) Moisturizing effect Example 1 and Comparative Example 1 were applied to each side of the face of 10 women aged 20 to 40, once in the morning and once in the afternoon, for one week. One week later, the side to which Example 1 was applied was the same as Comparative Example 1.
9 people said their skin texture was better and fresher than the side to which Comparative Example 1 was applied, and 1 person said it was the same level. 0 people responded, and Example 1 was clearly superior.

Example 5 Haboroku ■ Liquid paraffin 50 ■ Polyethylene glycol 4000 4 ■ Mica 5 ■ Kaolin 10 ■ Titanium oxide 5 ■ Mica-titanium pearl pigment 5 ■ Red No. 204 1 1 ■ Microcrystalline wax I5 ■ Varico wax 5 ■ ■■ is stirred and dissolved at 70°C, and while maintaining this at 70°C, separately stirred and mixed, ■ and ■~■ are added and mixed. After that, it was cooled and poured into a medium plate to fill it.

Example 6 Foundation ■Squalane 39 ■Sorbitan trioleate 1 ■Chondroitin sodium sulfate 20% aqueous solution 10 ■Talc 5 ■Mica 10 ■Titanium oxide 5 ■Iron oxide (red, yellow, black) 5 ■Solid paraffin 20 ■Carnauba wax 5 Stir and mix ■■. Add this to ■ and stir and mix to make a gel. Add Φ to ■ to this, stir and mix, and heat. Add ■■ to the above heated base and heat dissolve it,
After stirring and mixing, the mixture was poured into a medium plate and cooled.

3 1 B Example 7 Eye shadow ■ Squalane 18 ■ Dimethylpolysiloxane 10 ■ Sorbitan sesquioleate 2 ■ Glycerin 5 ■ Mica 20 ■ Kaolin 10 ■ Titanium dioxide 10 ■ Ultramarine 10 ■ Solid paraffin 8 [Phase] Balikowasox Fushi, same ■■ dissolved at 70°C was added to the mixture, and after mixing, the mixture was poured into a medium dish and cooled.

Example 8 Foundation ■ Liquid paraffin 20 ■ Isopropyl myristate 10 ■ Maltitol 1 ■ Mica 25 4 ■ Kaolin 25 ■ Titanium oxide 10 ■ Iron oxide (red, yellow, black) 5 ■ Candelilla wax 3 ■ Balikowasox 1 Stir ■～■ Mix, add ■■ to this and stir and mix for 70 minutes.
Heat to ℃. Similarly, at 70° C., dissolved ① was added and mixed, and then poured into a medium dish and cooled.

Examples 4 to # were all solid powder cosmetics that had high skin safety and were excellent in the effect of keeping the skin moist and fresh.

Patent applicant Shiseido Co., Ltd. 5 29-

Claims (1)

[Claims] (1) A solid powder cosmetic characterized by containing the following three ingredients. (A) Oil content including solid oil content 30 to 70% by weight (B)
Moisturizer 0.5-25% by weight (C) Powder 25-65% by weight