JPH045644B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a makeup-fading prevention powder that can be applied to cosmetics such as foundation and makeup to prevent makeup fading. [Prior Art] Various methods for preventing makeup from fading have been studied. For example, creamy make-up cosmetics are based on W/O emulsions or oils. This is because cosmetics such as O/W emulsion type and water dispersion type are washed away by sweat. In addition, powder-type cosmetics have been developed using techniques such as surface treatment of extender pigments, cake-like makeup cosmetics using surfactants (US Pat. No. 2,034,697), or incorporating large amounts of fine particles to increase the contact area with the skin. has been done. In particular, the surface treatment of extender pigments is
Many are known, such as hydrophobization treatment with silicone (Japanese Patent Application Laid-open No. 16404/1982), treatment with N-acyl amino acid salt (Japanese Patent Application Laid-open No. 72512/1983),
-196808), treatment with metal soap (Japanese Patent Application Laid-open No. 1983-
69011), treatment with an alkyl phosphate (Japanese Patent Application Laid-Open No. 163803/1982), treatment with collagen (Japanese Patent Laid-open No. 69710/1983), etc. are known. [Problems to be Solved by the Invention] However, conventional means for preventing makeup from fading have had many problems. That is, in surface treatment of extender pigments, although hydrophobicity is improved, adhesion to the skin is often weakened or the degree of hydrophobicity is insufficient. Even with alkyl phosphate treatment, which is thought to have the highest degree of hydrophobicity and high adhesion among these surface treatment methods, if it is made into powder form, it is difficult to prevent makeup from fading all day long due to the product characteristics. It is. Cake-type cosmetics cannot be used throughout the year because they use water, and there are problems such as a poor feeling when using them if a large amount of fine particles are blended. As mentioned above, attempts have been made to improve the longevity of makeup through various means, but they are still insufficient, and attempts to improve the longevity of makeup result in a stronger oily feel, and the most important thing is to prevent makeup from fading. This has made people feel reluctant to use it during the summer, and the types of cosmetics that can be applied have been limited. [Means for Solving the Problems] In view of this situation, the inventors of the present invention conducted intensive studies to find a means for preventing makeup from fading that is easy to use and has a general purpose. The present invention has been completed by discovering that simply applying the powder after applying foundation or make-up can sufficiently prevent makeup from fading. That is, the present invention contains 25 to 50% by weight of powdered metal soap and 42 to 75% by weight of powder for cosmetics, and is characterized in that it is used by applying it on top of makeup cosmetics. It provides powder. The powdered metal soap, which is the main component of the present invention, refers to non-alkali metal salts of long-chain fatty acids, naphthenic acids, resin acids, sulfonic acids, sulfuric acids, alkyl sulfuric acids, phosphoric acids, alkyl phosphoric acids, and the like. From the viewpoint of safety and stability, non-alkali metal salts of higher fatty acids such as myristic acid, stearic acid, and lauric acid, non-alkali metal salts of alkyl phosphoric acids, and the like are preferred. Furthermore, considering the feeling of use, non-alkali metal salts of alkyl phosphoric acids, especially divalent or trivalent metal salts such as Ca, Zn, Mg, Al, etc., of alkyl phosphoric acids having an alkyl chain of 10 to 20 carbon atoms are recommended. is particularly preferred. The powder for cosmetics can be arbitrarily selected from those used in cosmetics, such as talc, mica, kaolin, and titanium oxide. Colored pigments can also be used, which are suitable as color powders for adding cosmetic effects. The amount of powdered metal soap blended is 25 to 50% by weight (hereinafter simply abbreviated as %). If it is less than 25%, a sufficient effect cannot be obtained, and if it exceeds 50%, the powder tends to scatter, making it difficult to use, which is not preferable. Conventionally, metal soaps have been used as excipients in powder-type cosmetics or to improve adhesion to the skin, and are known to have high water repellency. However, the amount of metal soap that is generally blended into powder type cosmetics is about 3 to 10%. It was considered undesirable to incorporate a large amount because if the amount was increased beyond this, it would become too powdery to be practical as a cosmetic and cause caking. In contrast, the present invention has discovered that a powder containing powdered metal soap as a main component (25% or more) has an excellent effect of preventing makeup from fading. The blending amount of the powder for cosmetics is 42 to 75%. Depending on the dosage form, it is preferable that 8% or less of an oily component is blended into the makeup smear-preventing powder of the present invention. The oily component is not particularly limited as long as it is a liquid oil that can be used in cosmetics, but silicone oil, liquid paraffin, etc. are preferred from the viewpoint of usability and safety. In addition, oils, fats, and waxes that are solid at room temperature can also be used by melting and mixing them. The dosage form of the makeup smear-preventing powder of the present invention includes pressed powder type, loose powder type, face powder type, and the like. The preferred blending amounts of the ingredients of the present invention are as follows for each dosage form. That is, for powdered loose powder, powdered metal soap 25-40%, cosmetic powder 56%
~75%, and 4% or less of an oily component may be blended. For pressed powder that is compression molded, powder metal soap 30-50%, cosmetic powder 42-50%
In addition to 68%, 2 to 8% of an oily component is preferably blended as a binder. In addition to the above-mentioned ingredients, the makeup-preventing powder of the present invention contains ingredients used in cosmetics such as water-soluble gelling agents and oil-soluble gelling agents to improve moldability, moisturizing agents, preservatives, and fragrances. Can be blended. [Operation and Effects of the Invention] The makeup smudge prevention powder of the present invention can be applied over makeup like powder to remove makeup smudges due to sweat from cosmetics such as O/W emulsions and water dispersions, which was previously impossible. It can be completely prevented by doing this. It is also resistant to external water, such as during swimming, as it imparts high adhesion and water repellency to cosmetics such as foundations. Furthermore, since it is effective just by applying it over foundation or makeup, you can easily reapply it when you are in an environment where your makeup is likely to come off. [Example] Next, the present invention will be explained with reference to Examples. Example 1 Powder-type makeup smudge-preventing powder having the composition shown in Table 1 was manufactured, and its makeup smudge-preventing effect was examined.

[Table] <Production method> Powder components were mixed and pulverized using a pulverizer. An oily component, a preservative, and a fragrance were added and mixed uniformly using a high-speed blender. This was pulverized again using a pulverizer, passed through a mesh, and then compression-molded into a metal dish container. <Test Method> Ten expert panelists prepared a base with a commercially available O/W type foundation and had them apply the inventive product and the comparative product thereon. A questionnaire was then used to perform a sensory evaluation of the feel of use and the effect of preventing makeup from fading. The results are shown in Table 2. In addition, participants were placed in a constant temperature and humidity room with a temperature of 40°C and humidity of 75% to observe the time it takes for makeup to fade due to sweat (sweat stain test) and water resistance by spraying water on them after applying makeup (water resistance test). did. The results are shown in Table 3. <Results>

【table】

[Table] Example 2 Loose Powder Type Makeup Preventing Powder: <Composition> Talc Balanced Zinc Myristate 40 (wt%) Zinc Oxide 10 Calcium Carbonate 5 Red No. 226 0.01 Fragrance 0.2 <Production Method> Mix the powder components, Mix and grind using a grinder. Spray the fragrance on this and mix evenly. After pulverizing this again using a pulverizer, it is passed through a sieve to form a product. Example 3 Color Powder Type Makeup Preventing Powder: <Composition> Talc Balanced Kaolin 5 (wt%) Mica 10 Magnesium Stearate 28 Zinc oxide 5 Titanium oxide 3 Red iron oxide 0.1 Yellow iron oxide 0.1 Black iron oxide 0.03 Red No. 226 0.1 Yellow 401 No. 0.3 Silicone oil 2 Liquid paraffin 1 Isopropyl myristate 1.5 Preservative 0.1 Fragrance 0.1 <Manufacturing method> Mix the powder components and pulverize with a pulverizer.
Silicone oil, liquid paraffin, isopropyl myristate, preservatives, and fragrance are added and mixed uniformly using a high-speed blender. After pulverizing this again with a pulverizer and passing it through a mesh,
Compression mold into a metal plate container.

Claims (1)

[Scope of Claims] 1. It is characterized by containing 25 to 50% by weight of powdered metal soap and 42 to 75% by weight of powder for cosmetics, and is used by applying on makeup cosmetics. Powder that prevents makeup from fading. 2. The makeup smear-preventing powder according to claim 1, further comprising 8% by weight or less of an oily component. 3. The makeup-fading prevention powder according to claim 1 or 2, wherein the metal soap is a divalent or trivalent metal salt of an alkyl phosphoric acid having an alkyl chain having 10 to 20 carbon atoms.