PROYOU the toner shampoo 350 ml PROYOU the toner shampoo 350 ml is a gentle, natural shampoo that helps to refresh and hydrate hair while restoring balance and shine. It is formulated with amino acids and natural botanicals to nourish the scalp and hair. It helps to reduce build up, remove residue, and protect against environmental damage. This shampoo is free of sulfates, parabens, and other harsh chemicals, so it is safe for color-treated hair. It can be used daily for all hair types.