0 a very small, dark spot on the skin caused by a blocked pore (= small hole in the skin's surface) -- 黑头粉刺
A characteristic symptom of the infection is the development of cyanotic (bluish) discoloration on the head, giving rise to the common name of the disease, blackhead.
The negative aspect of the oily-skin type is that oily complexions are especially susceptible to clogged pores, blackheads, and buildup of dead skin cells on the surface of the skin.
Due to this antimicrobial activity, it can be used to clear skin from blackheads and spots, but it must always be properly diluted with a carrier oil.
Blackheads can be removed across an area with commercially available pore-cleansing strips or the more aggressive cyanoacrylate method used by dermatologists.
Some dogs are prone to have acne or at least blackheads.
In acne, the follicles become clogged with black sebaceous material, forming comedones (also known as blackheads).
Unlike blackheads, however, they can not be removed and are a permanent part of the human skin.
For this reason, those who frequently erupt with whiteheads or blackheads are advised to avoid topical use of this substance on the skin.
