| abstract |
PURPOSE:To provide a cosmetic containing monodispersed ultrafine crystal particles having specific particle diameter and particle size distribution as at least a part of the component, having excellent spreadability on the skin, giving durable makeup, capable of protecting skin from sunburn and having potential to decrease cause of aging such as spots and wrinkles. CONSTITUTION:A cosmetic base is compounded with at least one kind of ultrafine monodispersed crystalline particles having particle diameter of <=0.1mum and particle size distribution of 0.1-0.01mum and preferably selected from titania (TiO2), hematite (Fe2O3), silica (SiO2), mullite (3Al2O3.2SiO2), zirconia (ZrO2), titanium black (TiO) and magnetite (Fe3O4). The cosmetic produced by this process transmits visible light, reflects and scatters harmful ultraviolet ray causing sunburn, has potential to reflect infrared ray and reduce the cause of aging such as spots and wrinkles, affords durable makeup and is easily spreadable on the skin. |