[Product Question] How much PC BHA liquid, or Stridex to use? Should there be a visibly wet layer on top of your entire face?

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I'm curious if it matter's, because if I use a cotton pad for the PC BHA, at first it leaves a wet layer on 1/4 of my face, but then it seems like the rest of my face doesn't get much love, and there's no wetness on it as I swipe... (I assume it runs out)Do you re wet your cotton a few times while you do it?Stridex has a lot in it, so it wets the entire face...Also, if I go over the same area again after it dries 30 seconds or whatever later, will it be twice the strength? (not a good thing)
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Submitted by Concerta1