Acne blackheads, also referred to as blackhead pimples, are a black substance that forms when some sebum secretions are exposed to the body surface and oxidized by oxygen in the air. Blackheads are one of the more common types of acne and the earliest skin manifestation of acne. In terms of the causes, they are related to abnormal secretion of androgens in the body and excessive sebum secretion, as well as being affected by dietary factors and hygienic conditions. Abnormal secretion of androgens directly affects the secretion of sebaceous glands, which increases sebum secretion, thus increasing the chances of blackheads forming. For some people who like to eat greasy and spicy food, the oil secretion will increase significantly, coupled with bad habits such as not paying attention to hygiene, the incidence of acne blackheads will be significantly higher. It is recommended to visit the hospital, by the doctor’s judgment and guidance on the use of medication.