Gray Hair Coverage – Black soap restores your hair’s natural dark color and reduces the whiteness of your hair, making you look younger! Reduce Gray Hair – insisting on long-term use of our black soap can reduce the growth of gray hair. Hair Stronger- It can provide enough nutrients to the hair, nourish hair and scalp, and make hair stronger. Natural Formula – Completely safe and natural herbal formula, scientifically matched, mild, and non-irritating. Easy and Convenient – Apply the foam of the black soap to your hair. It can be used as a daily shampoo product to take care of scalp health and reduce gray hair.