A shampoo is a traditional Indian and Persian body massage given after pouring warm water over the body and rubbing it with extracts from herbs.
Since the early 20th century, the term shampoo has also been used for commercial liquid soap products for washing hair. Shampoo is designed to produce plenty of lather that removes dirt, without removing the natural oils that protect the hair. The product is made slightly acidic to cause the hair to contract slightly, giving it a shinier appearance.
Well-known shampoo brands include:
There is also a 1975 Hollywood motion picture named Shampoo. It stars Warren Beatty, Julie Christie, Goldie Hawn, Lee Grant
