Why is shampoo called shampoo?

The word shampoo comes from the Sanskrit word "champu," which refers to a type of massage using herbal oils. In India, this type of massage was traditionally used as part of a hair care routine, including washing the hair with herbal concoctions.

The term "shampoo" was introduced to the English language in the 19th century when British colonists in India were introduced to these traditional hair washing practices. Over time, the word became widely used to refer specifically to the product used for washing hair, rather than the massage itself.