This document discusses shampoo, including its definition, types, properties, active ingredients, and formulations. Shampoo is a hair care product that is usually a viscous liquid used to clean hair and remove grease, dirt, and debris from the hair and scalp. It contains surfactants that help dissolve oils and other contaminants from hair. Common types include liquid, powder, lotion, cream, conditioning, anti-dandruff, and specialty shampoos. Key active ingredients include surfactants, conditioning agents, viscosity modifiers, and preservatives. Several formulations are provided as examples, such as a basic liquid shampoo, powder shampoo, and anti-dandruff sh