The use of sulfur soap for back acne has some auxiliary therapeutic effect, sulfur soap can inhibit oil secretion, but should not be used too often in order to avoid causing skin dryness and other adverse reactions. 1. Sulfur soap can inhibit oil secretion and mite breeding, so for back acne patients, the use of sulfur soap for back acne can play some auxiliary treatment effect. 2. However, if patients use sulfur soap too often, it may cause the skin to become dry and rough, triggering a sense of skin irritation, but will promote skin oil secretion. So when back acne improves, patients should gradually stop using sulfur soap and switch to mild shower gel to wash. It is recommended that patients with back acne go to a regular hospital in time, follow the doctor’s instructions for standardized treatment, and should not abuse drugs on their own.