Also Shampoo:

Shampoo (Hindi: chāmpo from Sanskrit capayati: to press, knead, or soothe) entered Europe in the mid‑18th century when Sake Dean Mahomed, an Indian entrepreneur, opened the first shampooing salon in Brighton, England; his establishments popularised the Ayurvedic blend of herbs, oils, and extracts that are origin of today’s shampoo. Before that, Europeans did not use a dedicated cleansing product. Hair was typically rinsed with water mixed with vinegar, ash or herbs, and many households relied on egg‑yolk washes (often beaten with warm water) as a gentle cleanser and conditioner. These rudimentary methods kept hair relatively clean but left residues that could weigh the hair down, especially under the heavy wigs fashionable from the late‑16th century onward. Wigs offered a practical solution before shampoo: they protected the scalp from lice, reduced the need for frequent washing, and allowed wearers to maintain a tidy appearance despite the limited cleaning agents available.