Shampoo is a hair care product used for cleaning hair. It's typically in liquid form and is applied to wet hair, lathered, and then rinsed out. Shampoos are formulated with surfactants, which are compounds that help to remove dirt, oil, and other impurities from the hair and scalp. They often contain additional ingredients such as conditioning agents, fragrances, preservatives, and sometimes specialized ingredients targeting specific hair concerns like dandruff or dryness. There are various types of shampoos available on the market, including ones for different hair types (such as oily, dry, or curly hair) and specific purposes (like volumizing, color-safe, or clarifying shampoos). Some people also use specialized shampoos for specific scalp conditions or hair treatments.