When I was a teen, acne was the dreaded illness to be treated at all costs. That was long before teen pregnancy and drug abuse became much more of a problem. Nowadays acne has creeped from the teen years to affecting adults too. Men and women well into their 40's are now battling acne as if they were teens again.
One thing I had always thought was a major contributor to acne was air pollution. This is from my own experience when I was a teen growing up in a large urban city. When ever our family went on vacation to a rural or wilderness area, my acne would clear up entirely only to return when I was in a heavily air polluted area.
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