Clinically, there is a tendency for acne patients to increase, from babies as young as a few months old to elderly people, but after all, it is still more common in young people. The occurrence of acne is related to a variety of factors, including genetic factors, and changes in people’s lifestyles and dietary structure are factors that cannot be ignored. Although acne is not a major disease and has a tendency to heal itself, it is a special condition that develops on the face and chest and back, directly affecting people’s objective aesthetics, which in turn affects their psychology and causes unwarranted worries. Acne is a chronic inflammatory disease of the sebaceous glands of the hair follicles that is common in adolescence. It starts out as acne, with white heads and black heads, containing keratin and sebum, and white heads, also known as closed acne, are skin-colored papules, the size of a pinhead, with inconspicuous follicle openings and no easy extrusion of lipid plugs. It is easier to squeeze out the yellowish-white plugs. Acne can develop into inflammatory papules, pustules or abscesses, nodules and cysts, and even scarring. Acne occurs on the face, upper chest and back, where there is more sebum, and is symmetrically distributed. In mild acne, symptoms will gradually decrease or disappear after puberty, but those with pustules, nodules, abscesses, and cysts often leave behind depressed or hyperplastic scars afterwards. There is a type of coalescent acne that can occur on the buttocks and thighs in addition to the usual sites of onset. Often, pustules or cysts break down and form pus-filled fistulas, or deeper acne nodules gather and fuse, forming significant scarring after healing. There is also necrotizing acne with an umbilical fossa at the top, which can also leave scars after healing. Secondly, nodular acne, scarring acne, and some infantile acne can leave severe scars, resulting in disfiguring consequences with uneven heights on the face, chest, and back.