Founded in 1968, Leonor Greyl is a French company specialising in haircare products with a focus on plants and natural active ingredients. The Bain traitant à la Propolis is one of the brand's creations. Containing propolis, houseleek and wild pansy extracts, this anti-dandruff shampoo detoxifies and purifies the scalp while eliminating dandruff and itching. A must-have you'll want to try out straight away.