How do cosmetics trigger acne?

The use of cosmetics can be directly related to acne. In fact, acne cosmetica, or acne caused by cosmetics, is a common mild form of acne. Acne cosmetica is characterized by small, rashy, pink bumps on the cheek, chin and forehead. It develops over a period of a few weeks or months and may be persistent for a long time. Unlike other types of acne, it is triggered by topical rather than hormonal or medication-related factors. Even people who are not susceptible to acne sometimes suffer from acne cosmetica. Because it is generated by outside chemical substances, acne cosmetica is easy to get rid of. Once the cosmetic is discontinued, the acne should clear up on its own. Studies have shown that make-up may not cause true acne, but it can worsen the existing acne condition.