It is a high-alkaline soap made from olive oil and macerated olives, which give it its gel-like consistency and 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.
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