A less severe form of acne, also known as “open comedones”, blackheads are pores clogged with sebum (oil) and dead skin cells where the skin over the pore is open. Their black color is from the exposure of the sebum and dead skin cells to the air.
Also known as “closed comedones”, whiteheads are pores clogged with sebum (oil) and dead skin cells where the skin over the pore is closed. They are characterized by their white appearance on the skin, which is the color of the accumulated sebum and dead skin cells.
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