Acne begins in puberty, but it does not always end there. Every teenager, if examined closely enough will show some of the effects of acne with some being mild, others more severe. The major hormone causing changes in teenagers is androgen. Under its influence, the sebaceous glands produce more and more sebum (oil). This leads, then, to oily skin and a change in skin flora. There is an increase in the bacteria that cause acne as well as a type of fungus. All these contribute to the development of blockages at the oil gland openings known as comedones. Such blockages cause blackheads and whiteheads and acne when there is infection of the skins pores.
Acne should not be viewed as something that comes with puberty. It has lasting effects on the skin, like scarring, and should be treated. A gentle skin cleansing without using cleansers that over-dry skin should be established. Addition to that a supplement such as Acuzine should be taken to have a fast and effective acne cure inside out.
In adults, acne could be a carryover from adolescence, occupational (exposure to chemicals or other skin irritants in the workplace), drug induced (some medications exacerbate acne)...