Acne is caused when the pores which contain the hair follicles in our skin get clogged. No one yet understands why exactly these blockages occur, why they are more common in some people, or why they appear in varying degrees of severity. It is also not entirely understood why acne usually occurs during puberty, though during this time hormones are out of control and the sebaceous glands grow rapidly, both of which are probably the primary contributors to acne. When the hair follicles are clogged sebum, a naturally occurring skin oil, gets trapped in the pores. Normally, sebum is beneficial to the skin, helping prevent it from drying and fighting off skin rashes and infections. However, when sebum cannot drain because the pores are clogged, it wells up and become a Petri dish for growing bacteria.
The best that medical science has been able to do is to ascribe acne to heredity, which means if it runs in your family, you stand a high chance of getting it. Susannah Crewe, 25, an aspiring model from Tulsa whose career has suffered intensely owing to severe acne outbreaks, says she has a family history of acne, but the condition remained dormant until she began using certain cosmetics at around the age of 17, when she moved to New York with a promising career ahead of her. "I didn't realize it at the time, but the acne was triggered by these cosmetics," she says now.
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