African black soap, or black soap (also known by various local names such as sabulun salo, ose dudu and ncha nkota), is a kind of soap originating in West Africa. It is made from the ash of locally harvested African plants, which gives the soap its characteristic dark colour.
Black soap has become a popular toiletry product in North America due to its benefits on oily and acne-prone skin. In West Africa, especially Ghana, black soap is often made by women using traditional recipes and is often exported through fair trade groups.