Hair cleaner is a job that involves using shampoo to clean and maintain the hair of clients. Shampoo is a product used to cleanse the hair and scalp, usually with a combination of water, surfactants, and often conditioners and oils. It is typically used in conjunction with other hair care products such as conditioners and styling products. The term 'shampoo' is derived from the Hindi word 'champo, ' which means 'to massage.'