m.aster asked:


I’ve been trying out acne medication on my wrist thrice a day for the past four days, and behind my ear by my neck for the past day. Should I have developed something by now if I’m allergic to benzoyl peroxide? I tried Duac two years ago and developed a rash after about five days but I don’t know if that was because of the clindamycin or the benzoyl peroxide, which is why my physician suggested trying a patch test at home.

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