In terms of the choice of cleanser, if the diagnosis of acne vulgaris is confirmed, as the face is often accompanied by sebum and oil overflow, wash the face with warm water or an oil-controlling and moisturising cleanser to remove the mixture of excess oil, dander and microorganisms from the skin surface, but do not over-wash; washing the face twice a day is sufficient. Patients with rosacea can use a cleanser containing sulphur.