How Long Does It Take Acne Products to Work?
THIS Is When to Break Up With an Acne Product — For Good
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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.