Shampoo is a hair care product designed to cleanse the scalp and hair by removing dirt, oil, product buildup, and other impurities. It is the foundational step in most hair care routines and prepares the hair for conditioning and styling. Shampoo is a hair care product designed to cleanse the scalp and hair by removing dirt, oil, product buildup, and other impurities. It is the foundational step in most hair care routines and prepares the hair for conditioning and styling. Shampoo is a hair care product designed to cleanse the scalp and hair by removing dirt, oil, product buildup, and other impurities. It is the foundational step in most hair care routines and prepares the hair for conditioning and styling. Shampoo is a hair care product designed to cleanse the scalp and hair by removing dirt, oil, product buildup, and other impurities. It is the foundational step in most hair care routines and prepares the hair for conditioning and styling.