Shampoo is a liquid product used for cleaning hair and scalp. It typically contains a combination of water, surfactants, and other ingredients that help remove dirt, oil, and product buildup. Most shampoos are designed for specific hair types, such as dry hair, oily hair, or color-treated hair, and may include additional components like conditioners or fragrances. To use shampoo, a small amount is applied to wet hair, massaged into the scalp, and then rinsed out. Regular shampooing helps maintain hair health and cleanliness, making it an essential part of many people's personal care routines.