What are blackheads and whiteheads

Blackheads:

Blackheads, also known as open comedones, are follicles that have a wider than normal opening. They are filled with plugs of sebum and sloughed off cells and have undergone a chemical reaction resulting in the oxidation of melanin. This gives the material in the follicle the typical black color.

Whiteheads:

Whiteheads, also known as closed comedones, are follicles that are filled with the same material, but have only a microscopic opening to the skin surface. Since the air cannot reach the follicle, the material is not oxidized, and remains white.



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