There are many types of acne breakouts, all of which result when oil and dead skin build up and clog the pore opening. Blackheads, whiteheads, pustules (or nodules), and cysts are the four most common types of acne breakouts.
Acne is categorized into four grades (or stages) based on four observable characteristics: the total number of acne blemishes (known as comedones), the amount of inflammation (swelling), the areas of the body that are affected (extent of region), and the inflammatory
Acne is a skin disorder due to blockage of the sebaceous glands. Skin contains thousands of sebaceous glands that produce sebum (oil) that serves moisturize and protect the skin. Sebum produced by the sebaceous glands distributed through the hair follicles (pores) to the skin surface. Acne occurs when sebum that normally come out to the surface of the skin was clogged. Facial skin has a high density of sebaceous glands, especially in the area of the nose, forehead and cheeks. Sebaceous glands
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