A shampoo is a hair care product designed to clean the hair and scalp by removing dirt, oil, and other impurities. It typically contains a combination of surfactants (cleansing agents), moisturizers, and sometimes conditioning agents to keep hair smooth and manageable. Shampoos may also contain various active ingredients like vitamins, proteins, or natural extracts to promote hair health, add shine, or target specific concerns such as dandruff, dryness, or color protection. They are available in different formulations for various hair types, including oily, dry, damaged, or color-treated hair. Most shampoos are applied by massaging into wet hair, lathering, and rinsing thoroughly.