BPO actually penetrates the skin fairly quickly and can start to kill bacteria in a short period of time. I think BPO washes can be somewhat effective for mild inflamed acne, but probably wouldn't be enough on its own for more serious or persistent acne problems.
I think other topical ingredients in cleansers (e.g.; salicylic or glycolic acid), are less effective because they are not on the skin long enough to penetrate the skin and have an impact.
willow569Member Since 07 Apr 2006
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