JPH0520412B2 - - Google Patents

Description

[Detailed description of the invention]

TECHNICAL FIELD OF THE INVENTION The present invention relates to an improved cake-like makeup cosmetic. (Prior Art) Conventionally, cake-like make-up cosmetics such as eye shadow, almost rouge, and foundation have been blended with tar-based pigments in addition to inorganic pigments and oil-based substances in order to obtain vivid color development. However, with only tar-based pigments, there is a cake-like color with little difference in color between the appearance color of the cosmetic itself (hereinafter referred to as coloring) and the color tone when applied to the skin (hereinafter referred to as coloring). It has been difficult to obtain make-up cosmetics. As a result of intensive research in view of the above circumstances, the present inventors confirmed that riboflavin and riboflavin tetrabutyrate are effective as excellent yellow pigments with vivid coloring, and furthermore, riboflavin and riboflavin tetrabutyrate are inorganic. The present invention was completed after discovering that a cake-like make-up cosmetic containing 1% by weight or more based on the total amount of pigments exhibits vivid color, has little difference in color between appearance and application, and has excellent light resistance. did. (Structure of the Invention) That is, the present invention is characterized by blending an inorganic pigment, 1% by weight or more of riboflavin and/or riboflavin tetrabutyric acid ester based on the total amount of the inorganic pigment, and an oily substance. It is a cake-like makeup cosmetic. (Specific explanation of composition) Riboflavin and riboflavin tetrabutyrate used in the present invention are known compounds used as nutritional fortifiers for foods or pharmaceuticals (vitamin preparations) (according to the Japanese Food Additives Official Standards, Third Edition). (listed in the commentary), and its crystals emit fluorescence and appear yellow. The blending amount (amount used) of riboflavin and/or riboflavin tetrabutyrate is 1% by weight or more, preferably 2 to 80% by weight based on the total amount of inorganic pigments.
Weight%. If it is less than 1% by weight, it is not preferable because the color development and light fastness of the cosmetic will decrease and the color difference between the appearance color and the applied color will increase. When the content is 1% by weight or more, color development and light fastness are improved, and when the cosmetic is applied to the skin, the appearance of the cosmetic is faithfully reproduced and the color is vivid, resulting in so-called color appearance and coloration. It is possible to exhibit the effect of reducing color differences. The inorganic pigments used in the present invention are not particularly limited, and extender pigments include talc, kaolin, mica, calcium carbonate, titanium dioxide, titanium mica, magnesium carbonate, magnesium silicate, etc., and colored pigments include oxidized Examples include iron, gunjiyo, konjiyo, etc. The amount of inorganic pigment blended is preferably 40 to 95% by weight based on the total amount of the cosmetic. Examples of oily substances include animal and vegetable oils, waxes, higher aliphatic hydrocarbons, higher fatty acids, higher alcohols, synthetic ester oils, polybutene, and silicone oils. The amount of the oily substance blended is preferably 50 to 60% by weight based on the total amount of the cosmetic. Oily substances are
It improves the color development of cake-like make-up cosmetics, improves their adhesion to the skin, and can also be effective as a binder for adjusting the dosage form of cake-like make-up cosmetics. In addition to the above-mentioned ingredients, the cake-like makeup cosmetic of the present invention contains fragrances, antioxidants, preservatives, humectants, organic pigments, polymeric substances, surfactants, etc. within the scope of achieving the object of the present invention. It is also possible to appropriately incorporate agents, skin nutrients, etc. Hereinafter, the present invention will be explained in detail with reference to Examples. Test methods such as the light fastness test, practical test (sensory test) to compare visual coloring and coloring, and color development test described in the examples are as follows. (1) Light resistance test Prepare 10 test pieces, store 5 pieces in a solar box (glass case) and expose them to sunlight for 2 weeks, and keep the other 5 pieces in a cool dark room (5℃) for 2 weeks. saved. Thereafter, the appearance of both samples was visually observed to evaluate the color change. Furthermore, the color difference between these two samples was measured using a high-speed spectrocolorimeter (Model CMS-1000 manufactured by Murakami Color Research Institute) using the Hunter colorimeter system, and the color difference (△E) was calculated using the following method. Calculated from the formula. Further, the color difference (ΔE) was expressed as the average value of the ΔE values calculated from five sets of measurement values consisting of both samples. △E√(△) ² +(△) ² +(△) ^2The relationship between the △E value and the evaluation by naked eye observation is as shown in Table 1.

[Table] (2) Practical test (sensory test) Comparative test of contrasting colors Using the sample of the comparative example and the sample of the example as one set, the comparative example was placed on one half of the face of 30 female test subjects, and the other Each of the examples was coated on one half of the sample, and the degree of color difference between the appearance color and the applied color in each sample was evaluated. The evaluation results were expressed as the number of people who answered, "I hardly notice any color difference." Color development test Following the above-mentioned comparison test of color appearance and coloring, the color development of the samples of the comparative example and the sample of the example was evaluated in terms of three items: gloss, vividness, and color tone. The evaluation results were expressed as the number of people who answered that the product was "shiny,""vivid," and "good in color." Examples 1 to 3 and Comparative Examples 1 to 3 [almost red] (1) Composition

[Table] (2) Preparation method After stirring and mixing the ingredients in (A) uniformly, add the ingredients in (B), and then pouring the mixture into a metal plate and pressing it with a molding machine. A cake-like blush was obtained. Table 2 shows the results of the light fastness test, the comparison test of visual coloring and coloring in the practical test, and the color development test for Examples 1 to 3 and Comparative Examples 1 to 3. In addition, the practical test was carried out by a paired comparison method of Comparative Example 1, Examples 1 to 3, and Comparative Examples 2 to 3.

[Table] As shown in Table 2, yellow 5 is a tar-based pigment.
The blushes of Examples 1 to 3, which contain riboflavin and/or riboflavin tetrabutyric acid ester in an amount of 1% by weight or more based on the total amount of inorganic pigments instead of No. aluminum lake, have excellent light resistance and have excellent color appearance. The color difference in coloring is reduced, the vividness is further increased,
It is clear that this is an improved blusher. Examples 4 to 6 and Comparative Example 4 [Oil-based foundation] (1) Composition

[Table] (2) Preparation method Stir and mix the ingredients of (A) uniformly at a temperature of 80℃.
The mixture is added to component (B) dissolved at ℃ to obtain a uniformly stirred and mixed composition. This composition is heated to a temperature of 80~
The temperature was set at 85°C, and an appropriate amount was poured into a metal plate, and the mixture was slowly cooled to room temperature to obtain a cake-like oil-based foundation. Similar to Example 1, various tests were conducted and the results are shown in Table 3. The practical test was carried out using a paired comparison method of Comparative Example 4 and Examples 4 to 6.

[Table] As shown in Table 3, yellow 5 is a tar-based pigment.
Examples 4 to 6 are improved oil-based foundations in which riboflavin and/or riboflavin tetrabutyric acid ester is blended in place of No. 401 aluminum lake and yellow aluminum lake. Example 7 and Comparative Example 5 [Eye shadow] (1) Composition

[Table] (2) Preparation method Add component (B) to the mixture of components (A) by stirring evenly, stir and mix evenly, put an appropriate amount of the composition into a metal plate, and press with a molding machine. , a cake-like eyeshadow was obtained. As a result of conducting various tests in the same manner as in Example 1, it was found that Example 7 had superior light resistance, reduced color difference between viewing color and applied color, and further improved vividness compared to Comparative Example 5. It was confirmed that it was Aishido. (Effects of the Invention) As described above, the cake-like makeup cosmetic of the present invention has improved light fastness, color difference between coloring and coloring, and color development, and emits fluorescence under irradiation with ultraviolet rays, making it even more attractive. It produces a bright color and produces a strikingly beautiful makeup effect.

Claims (1)

[Claims] 1. A cake-like makeup cosmetic comprising an inorganic pigment, 1% by weight or more of riboflavin and/or riboflavin tetrabutyric acid ester based on the total amount of the inorganic pigment, and an oily substance.