In my experience, this is a great product, but only when your pimples have popped! If it hasn't popped, it doesn't do much at all. What I do is either wait for it to pop itself, or pop it myself. I know it's not recommended to pop pimples, but for me, if I use the patch after popping them, it works wonders in reducing the redness and reducing scarring. For best results, use together with the Cosrx Vitamin C Serum to help diminish the scar as fast as possible.

TIP: To extend the use of the patches, cut the large patches in half! It comes with patches of different sizes, and I usually don't need the really big patches, so to extend the use of these patches and not waste them, I cut the large patches in half.

HIGHLY RECOMMENDED!