Moroccan black soap or beldi soap is a kind of soap originating in Morocco. It is a high-alkaline Castile soap made from olive oil and macerated olives with a gel-like consistency. This gives the soap its characteristic dark greenish-black color.^[1]

In the hammams of Morocco, black soap is used for cleansing, moisturizing the skin, and exfoliating.^[2][3] A pinch of soap is rubbed onto wet skin. After 5-10 minutes a coarse fabric washcloth called a kessa is used to remove dead skin. The soap is high in Vitamin E. Moroccan black soap should not be confused with African black soap, as the ingredients and place of manufacture are quite different.^[1]