Shampoo or chāmpi is a type of Indian head massage usually with some form of hair oil. The English word shampoo, for a hair cleanser, is derived from this Hindi word and dates to 1762. The word and the service of head massage were introduced to Britain by an Indian entrepreneur Dean Mahomed. Mahomed introduced the practice to Basil Cochrane's vapour baths while working there in London in the early 19th century. In 1815, together with his Irish wife, he opened "Mahomed's Steam and Vapour Sea Water Medicated Baths" in Brighton, England where clients received an Indian treatment of champi (shampo...