Shampoos are hair care products that are used to remove oil, dust, dirt, pollutants, and dead skin cells that build up on the strands of your hair throughout the day without stripping too much oil that it damages the hair strands. It contains surfactant which help to reduce the surface area between two liquid and solid, in this case the hair. It also contain detergent, a water soluble cleansing agent which when combined with dirts and impurities render them soluble for easy washing.