While the whole "it gets worse before it gets better" stage of a skincare routine (better known as "purging") is very real — and benzoyl peroxide, salicylic acid, and retinoids can cause slight irritation and dryness at first, Dr. Fusco said — if you're developing more acne than ever, especially in areas that were never a problem before, this is a good indicator that this particular product is not for you.
Image Source: POPSUGAR Photography / Diggy Lloyd