Blackhead Diagram. The columns show a focus shift. Comedones are formed as a result of the blockade of the duct of something known as the pilosebaceous unit.
Answer 1 of 4. A blackhead refers to something scientifically known as a comedone. The columns show a focus shift.
Ideally they should be removed professionally to avoid scarring and infection.
As soon as a blind pimple develops apply an anti inflammatory topical antibiotic like eryacne or clindatech. Image editor save comp. Search for pimple diagram in these. Nose clock heart diagram open mouth with tooth.