JP2000119135A - Powdery make-up cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powdery make-up cosmetic that can retain the cosmetic effect as well as the moistening effect, excellently. SOLUTION: The objective powdery make-up cosmetic contains a pigment that is coated with an agar-agar having a jelly strength of 400-800 g/cm2, when its aqueous solution of 5 wt.% concentration is solidified. The amount of the agar-agar for coating the pigment is preferably 1.0-10.0 wt.% based on the total weight of the agar-agar and the pigment. The treatment of the pigment with <1.0 wt.% of the agar-agar may not assert the effect according to this invention, >10.0 wt.% causes the difficulty of grinding agar-coated pigment after coating and drying or the feeling of the powdery make-up cosmetic becomes deteriorated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powdered makeup cosmetic, and more particularly, to a powdered makeup cosmetic which has a long lasting cosmetic effect and moisturizing effect.

[0002]

2. Description of the Related Art Conventionally, powder makeup cosmetics require pigments such as inorganic powders such as iron oxide, titanium oxide, sericite, talc and kaolin, and organic powders such as nylon powder and polyethylene powder. It is blended as an ingredient. However, all of these pigments have poor adhesiveness to the skin and have a weak water retention ability. Therefore, cosmetics in which these pigments are blended, firstly, the makeup film is easy to flow with sweat and sebum, so the persistence of the makeup effect is poor, and secondly, since moisture is not retained in the makeup film, In the dry season of autumn and winter, there was a drawback that the skin became bulky and the powder was raised.

[0003] Therefore, in cosmetics, the surface of the pigment is conventionally coated with a water-soluble polymer in order to enhance the adhesion to the skin, conformity, and moisture retention. However, there are many types of water-soluble polymers, and there is naturally superiority in the target water retention capacity, adhesiveness when containing water, and gel strength, and trial and error is performed to select the optimal one. Is the current situation. For example, when a pigment coated with a water-soluble polymer having low adhesive strength and low gel strength is blended into a cosmetic, the familiarity to the skin is improved,
The time required for the cosmetic effect to be maintained on the skin where sweat and sebum are secreted by repeating expansion and contraction throughout is at most about 1 to 2 hours. In addition, the cosmetic effect is usually lost, and the moist feeling is also weakened.

[0004] Among many water-soluble polymers, the coated pigment has adhesiveness and water retention ability when containing water, so that the coated film of the cosmetic containing the coated pigment has sufficient strength and strength. Those that can provide moisturizing persistence are very limited, and blend pigments coated with such a water-soluble polymer, have excellent moisturizing effects, and have good familiarity with the skin.
There is a demand for a cosmetic product with good makeup durability.

[0005]

That is, the present invention provides:
It is an object of the present invention to provide a powdered makeup cosmetic which is excellent in persistence of a cosmetic effect and a moist effect.

[0006]

Means for Solving the Problems In view of the above situation, the present inventors have conducted intensive studies to improve the disadvantages of the prior art, and as a result, have found that the jelly strength when a 1.5% by weight aqueous solution is solidified. It has been found that the above object can be achieved by blending a pigment coated with agar in the range of 400 to 800 g / cm ² into a powdered makeup cosmetic.

That is, according to the present invention, the jelly strength is 400
A powder make-up cosmetic comprising a pigment coated with agar at 〜800 g / cm ² .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail.

The agar used in the present invention is a known substance obtained from red algae such as Ogonori and Maxa. Examples of commercially available agar are Ina Agar S-7, Z manufactured by Ina Food Industry Co., Ltd. -10, ZH, FGU-50, UP-
6, M-7 and the like.

[0010] The method of measuring the jelly strength of agar referred to in the present invention is a known method called the "Nichikansen method", which is adopted by the Japan Agar Fisheries Association and is based on the Japanese Agriculture and Forestry Standard (Japanese agriculture and forestry standard of agar;
It was also adopted in the Ministry of Agriculture and Forestry Notification No. 882 of 1957. "A gel prepared by making a 1.5% by weight solution of agar and left to coagulate at 20 ° C for 15 hours was used as a jelly strength meter for cold and cold water type. Then, the maximum load (g) that can be endured for 20 seconds per 1 cm ^{2 of} the surface is measured to determine the jelly strength. ”

In the present invention, the method of coating the agar with the pigment is a known method. First, the agar is completely dissolved in hot water at about 80 ° C., and the pigment is uniformly dispersed in the solution. , Dried and pulverized. When the agar is dissolved in hot water, it is usually performed at about 5% by weight of the agar based on the hot water, and this concentration may affect the quality and effect of the final cosmetic containing the agar-coated pigment according to the present invention. Is not particularly limited, so long as the agar can coagulate. The drying method includes a vacuum drying method, a freeze drying method, a hot air drying method, and the like. However, since any of the methods can obtain the same thing, there is no particular limitation. It is more preferable in terms of stability and feel as cosmetics. In addition, the pulverization method may be a conventional pulverizer such as a hammer mill, a ball mill, a sand mill, and a jet mill, but is not particularly limited since any of them can provide the same quality.

The suitable amount of the agar of the present invention for coating the pigment is preferably 1.0 to 1 with respect to the total amount of the agar and the pigment.
0.0% by weight. If the amount is less than 1.0% by weight, the effects of the present invention may not be exhibited. If the amount exceeds 10.0% by weight, pulverization after drying after agar coating treatment becomes difficult, and the feel of the powder makeup cosmetic is poor. It is not preferable because it may result.

The agar used has a jelly strength of 400-800 g / g when the 1.5% by weight aqueous solution solidifies.
cm ² range. Jelly strength 400g / c
When it is less than m ² , the moistening effect is slightly increased as compared with the case of the untreated (not coated with agar coating) pigment, but the cosmetic effect is not maintained, and the moisturizing effect disappears in a short time. Also, when a material exceeding 800 g / cm ² is used, the usability such as elongation and stickiness is poor,
The uniform feeling is impaired even in the makeup finish.

In the present invention, the powdered makeup cosmetics refers to those containing 50% by weight or more of pigment powder and powdery in appearance. The amount of the agar-coated pigment of the present invention to be added to the powder makeup cosmetic is preferably 50% by weight or more from the viewpoint of elongation and stickiness.
It is more preferably at least 70% by weight.

The type of pigment coated with agar of the present invention is not particularly limited as long as it is water-insoluble and has a heat resistance of 80 ° C. or higher. Coating treatment is possible. Organic pigments include, for example, tars such as red 201, red 202, red 226, red 104 (1) aluminum lake, yellow 4 aluminum lake, yellow 5 aluminum lake, blue 1 aluminum lake and the like. Natural dye lakes such as pigments and gardenia dye-dyed silk powder, safflower dye-dyed cellulose powder, safflower dye-dyed silk powder, silicon dye-dyed silk powder, nylon powder, acrylic powder, polyethylene powder, silicon powder, etc. Polymer resin Polymer powder is exemplified. Inorganic pigments include, for example, red iron oxide, yellow iron oxide, black iron oxide, gunjo, konjo, chromium hydroxide, manganese violet, cobalt hydroxide, cobalt titanate, titanium oxide, zinc oxide, alumina, magnesium oxide, zirconium oxide , Titanium mica, barium sulfate, calcium carbonate, mica, talc, kaolin, sericite and the like.

In the powder make-up cosmetics according to the present invention, in addition to the above-mentioned components, powders and oils usually used in cosmetics as long as the object of the present invention and the stability and safety of the product are not impaired. , A resin, a surfactant, an ultraviolet absorber, a fragrance, a preservative, a bactericide, a humectant, a thickener, a physiologically active ingredient, a solvent, a salt, and water.

The powders used in the cosmetics include:
Powders and surface-treated powders thereof are also included. As the surface treatment, conventionally known surface treatment, for example, fluorine compound treatment,
Silicone treatment, pendant treatment, silane coupling agent treatment, oil treatment, N-acylated lysine treatment, polyacrylic acid treatment, deoxyribonucleic acid treatment, deoxyribonucleic acid potassium salt treatment, metal soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment And mechanochemical treatment.

Examples of oil components include natural extracted oils such as castor oil, jojoba oil and olive oil, synthetic oils such as monoester oil, diester oil and triglycerin, and hydrocarbon oils such as liquid paraffin, squalane and petrolatum. And silicone oils such as methyl silicone, methyl phenyl silicone and cyclic silicone. In addition, the compounding agent of the oily raw material used in the powder makeup cosmetic of the present invention,
Although it depends on the variety used, the suitable compounding amount range is generally 0.1 to 30.0% by weight.

As the surfactant, for example, an anionic surfactant, a cationic surfactant, a nonionic surfactant, a betaine surfactant and the like can be used.

Examples of the ultraviolet absorber include 2-ethylhexyl paramethoxycinnamate, 2-ethylhexyl paradimethylaminobenzoate, 2-hydroxy-4-methoxybenzophenone and the like.

Examples of the tackifier include polycarboxylic acid, polyacrylic acid, polyvinyl alcohol, gellan gum, gum arabic, tragacanth gum, karaya gum, xanthan gum, tamarind gum, guar gum, alginic acid, carboxyl vinyl polymer and the like.

Examples of physiologically active ingredients include anti-inflammatory agents, tyrosinase activity inhibitors, plant extract vitamins, sulfur, urea and the like.

Examples of the solvent include ethanol, methanol, isopropyl alcohol, LPG and the like.

Examples of the salts include sodium chloride, potassium chloride, calcium chloride, calcium lactate, and various phosphates of aluminum chloride.

The powder makeup cosmetic of the present invention includes, for example, foundation, white powder, eyeshadow and the like.

[0026]

EXAMPLES Hereinafter, the present invention will be specifically described by way of examples. Prior to this, the evaluation items and the evaluation method will be described in detail. Note that the present invention is not limited to these. The numerical values in the following Examples and Comparative Examples are all by weight.

20 female test panelists applied the sample of the example and the sample of the comparative example to the foundation, applied the powdered white powder to the left and right half faces, and applied the eye shadow to the left and right eyelids evenly.
Regarding the following items, each person was made to make a relative evaluation judgment by a 5-point scoring method based on the following criteria, the results were totaled, and an average score was set as an evaluation result. In addition, each comparative example was evaluated blindly as a relative evaluation standard (control).

[0028]

[Table 1]

The method of preparing the agar-coated pigment to be used is as follows. First, the untreated pigment and agar are weighed, and the agar is completely dissolved in hot water at 80 ° C. in an amount to give a concentration of 5% by weight. After the untreated pigment was added and mixed uniformly, the mixture was prepared by hot air drying and hammer mill pulverization.

Examples 1 to 3 and Comparative Examples 1 to 3 (powder foundation)) The formulations of Examples 1 to 3 and Comparative Examples 1 to 3 are as shown in Table 2. The powder foundation shown in Table 2 was adjusted by a usual method and the above test was conducted. The results in Table 2 were obtained. Table 2
The inner agar-coated pigment (1) has a jelly strength of 580 to 6
20 g / cm ² of agar, agar-coated pigment (A) has a jelly strength of 30 to 200 g / cm ² , and agar-coated pigment (B) has a jelly strength of 840 to 880 g / cm 2.
² agar was used. The untreated pigment (1) having the composition shown in Table 3 below: 95% by weight was coated with 5% by weight of agar by the method described above. Note that, only in this case, since there were a plurality of comparative examples, Comparative Example 1 was used as a control.

[0031]

[Table 2]

[0032]

[Table 3]

Example 4, Comparative Example 4 [Powder Eye Shadow] The formulations of Example 4 and Comparative Example 4 are as shown in Table 4. Powder eye shadow shown in Table 4 was prepared by a usual method,
The test was performed and the results in Table 4 were obtained. The agar-coated pigment (2) in Table 4 has a jelly strength of 710 to 750 g / cm.
The agar of No. ² was coated with 3% by weight of the untreated pigment (2) having the composition shown in Table 5 below: 97% by weight according to the above method.

[0034]

[Table 4]

[0035]

[Table 5]

Example 5, Comparative Example 5 [Powder Powder] The formulations of Example 5 and Comparative Example 5 are as shown in Table 6. The white powder shown in Table 6 was adjusted by a usual method and subjected to the above test, and the results shown in Table 6 were obtained. The agar-coated pigment (3) in Table 6 was coated with agar having a jelly strength of 440 to 480 g / cm ² in an amount of 8% by weight with respect to 92% by weight of the untreated pigment (3) having the composition shown in Table 7 below. It has been processed.

[0037]

[Table 6]

[0038]

[Table 7]

As shown in Tables 2, 4 and 6, Examples were clearly superior to Comparative Examples in terms of dry feeling and cosmetic effect after 3 hours.

[0040]

As described above, it is apparent that the present invention provides a powdered makeup cosmetic which is excellent in persistence of a cosmetic effect and a moist effect.

Claims (1)

[Claims] 1. Jelly strength of 400 to 800 g / cm ²
A powdered makeup cosmetic comprising a pigment coated with agar, which is in the range described above.