The main trigger of acne is extra hormones — specifically, testosterone, often referred to as the “male hormone,” (However, Women have testosterone too.) When teenagers hit puberty, their hormones start surging — and then, the acne acts up. However, acne is not just in teenagers.
- 51% of women 20 -29 years old,
- 35% of women 30-39 years old,
- 26% of women 40-49 y/o
have acne per a study in 2008.