The purpose of cosmetics is protection of the body from the element of nature. Early people painted themselves with oil, clay and plant materials to protect themselves against cold, strong sunlight and insects bites.
The main purposes for using cosmetic in modern world for personal hygiene, to enhance attractiveness through using makeup for protect skin and hair from damaging ultraviolet light, pollutants and other environmental factor to prevent aging, and in general to help people enjoy rewarding life.