The black colour comes from the addition of Activated Charcoal, which has been known for centuries to help draw impurities out of the skin. Osun (Camwood) a powder used to prepare the skin of brides for centuries across Nigeria, gives the purple strip. This powder is from the bark of a tree with phenomenal healing and restorative powers. The Red is Kaolin Clay which is known for its skin exfoliating and regenerating powers.The cream colour is from Goat Milk and Zinc Oxide, a natural clay used by African mothers to soothe heat rash. The addition of Tea Tree Oil adds natural anti fungal and antiseptic properties. Suitable for daily use ONLY by those with oily skin. Normal to dry skin generally likes this soap for a weekly deep clean.