Blackheads, also known as blackhead pimples, are open pimples. Treatment includes topical medication and chemical peeling. 1. Topical medication: Generally, you can use topical retinoic acid drugs, such as retinoic acid ointment, adapalene gel, etc., to exfoliate the epidermis and improve the symptoms of blackheads. 2. Chemical peeling: It is the use of chemical preparations such as fruit acid, salicylic acid and amygdalic acid on the skin to make the epidermis and the superficial dermis partially peeled off, so as to remove blackheads. It is recommended that patients go to the dermatology department of a regular hospital, under the guidance of a professional physician for reasonable treatment, and follow the doctor’s instructions for medication, not blindly self-medication.