Walnut leaves are antiseptic and absorbent, traditionally used to control excess sweating. It also acts as a toner on the skin.
The walnut tree, belonging to the juglandaceae plant family, grows all over the world in places like North and South America, Europe, Asia and has also been cultivated in England. The large walnut tree can grow up to 100 ft high and 12ft in diameter. Walnut leaves and husks were the main source of brown hair dyes until the 20th century.
Lush buys powdered walnut leaves in Europe. It is produced from grinding the dried cut leaves of the walnut tree, yielding a green-brown powder with a mild yet spicy odour.