Chinese Herbal Remedies, Botanicals, Qi, Acne

Acne: What is it? What causes those unsightly blemishes we all know as Teens, as ZITS !!!  Those ugly skin irritations that pop up when we start adolescence, and sometimes last into our late 20's. Can you get rid of acne, or just control it?   How much scrubbing and cleaning do we need to do to avoid those eruptions that cause us some much personal anguish right before those important dates or meetings?