Exfoliating and scrubbing: Apply black soap in a semi-thick layer to damp skin, emulsifying all over the body and face, and taking care to avoid the eyes. Taking care to avoid the eyes and lips. Leave on for 10 minutes, then rinse off while exfoliating with a horsehair or kessa glove. Carry out energetic circles without aggressing your face. Shower gel: Dilute 2 tablespoons of black soap in a bowl of warm water. Apply the resulting mixture to the body as you would a conventional shower gel. Rinse by rubbing the skin with a horsehair glove.