This document discusses cosmetics, including their definition, common materials used, classification, microbiological aspects, product formulation, safety and toxicology, and legislation and regulations. It defines cosmetics as any article intended to be applied to the human body to cleanse, beautify or alter appearance. Common materials used include water, preservatives, oils and colors. Cosmetics are classified based on the area of the body they are used on, such as skin, hair, eyes and nails. Microbiological aspects and preventing contamination during manufacturing are also covered. The safety and toxicology section discusses irritation, sensitization and systemic effects. Legislation and regulations in India such as the Drugs and Cosmetics