Cosmetic containing glass flakes

• Main Authors: YAGYU TOMOHIRO, YANAGASE SHIGERU, ISHIBE HISAO
• Format: Patent
• Language: English
• Published: 02.12.2015
• Subjects: ADHESIVES; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; DYES; GLASS; HUMAN NECESSITIES; HYGIENE; INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS; INORGANIC CHEMISTRY; JOINING GLASS TO GLASS OR OTHER MATERIALS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MINERAL OR SLAG WOOL; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; PREPARATION OF CARBON BLACK; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

A cosmetic of the present invention contains glass flakes. The glass flakes have a composition including at least 52 mass % of silicon dioxide and 5 mass % or less of alkali metal oxides. The glass flakes have an average thickness of 0.1 to 1.0 [Mu]m, an average particle diameter of 1 to 100 [Mu]m, and an average aspect ratio of 10 or greater. The average aspect ratio is obtained by dividing the average particle diameter by the average thickness. The particle diameter distribution index of the glass flakes is 5.0 or less. The particle diameter distribution index is obtained by dividing D90 by D10, where in the particle size distribution of the glass flakes, D10 is a particle diameter at which the cumulative mass distribution of particle diameters reaches 10% when counted from the smaller side, and D90 is a particle diameter at which the cumulative mass distribution of particle diameters reaches 90% when counted from the smaller side.