How does acne affect most women?

Highly variable. Acne affects about 80% of the population. Women can get acne at any age. It can appear as papules (red bumps), pustules (red bump with pus coming to a head), comedones (whiteheads and blackheads), or cystic nodules (deep tender lumps underneath the skin). It can appear anywhere on the body including face, scalp, neck, chest, shoulders, back. It can be mild, moderate, severe.