A comedo is a clogged hair follicle (pore) in the skin. Keratin (skin debris) combines with oil to block the follicle. A comedo can be open (blackhead) or closed by skin (whitehead), and occur with or without acne. The word comedo derived from the latin comedere, meaning "to eat up", and was historically used to describe parasitic worms; in modern medical terminology, it is used to suggest the worm-like appearance of the expressed material.
An open comedone is what we more commonly call a blackhead. The plug of oil becomes trapped within the hair follicle. The top of the plug is exposed to air and darkens to that dark brown typical of blackheads.
Like most types of acne, comedonal acne is especially common during the preteen and teen years, but it can happen at any age.
Comedonal acne tends to run in families. So if your parents or siblings had it, you're more likely to have it too. People with oily skin are more prone to comedonal acne.
While your typical skin care routine probably isn't going to clear your skin, there are plenty of treatments that will.
Esthetician performs full face skin clearance from blackheads and infected comedones. She applies bamboo sticks to abscessed areas to suck out the pus and infected blood. After extracting all comedones she applies antibacterial calming gel