Rhassoul is a volcanic clay collected in the Middle Atlas region of Morocco. It is used to prepare mild and purifying shampoos thanks to its exceptional ability to absorb impurities without irritating the skin. 
 It is an essential element of the hammam rituals. Unlike shampoos and soaps, Rhassoul does not contain surfactants and cleanses through a physical process by absorbing impurities and fats. It thus respects the hydrolipidic film of the skin and hair and does not irritate the sebaceous glands.