This became a significant problem for dermatologists in the 1970s and 1980s, but with the improved formulations produced by cosmetic chemists , a diagnosis of acne cosmetica has become relatively rare in dermatological practice.
In the 1970s and 1980s, dermatologists encountered a significant issue, but with the development of more effective cosmetic products by cosmetic chemists, the diagnosis of acne caused by cosmetics has become relatively rare in dermatology.