i am currently using CosRx's BHA and AHA liquids to purge out closed comedones that have been stuck under my skin for years. purging is a nasty experience and it can be really embarrassing to have all those bumps coming out of your face, but I found that this product helps out a lot by drastically speeding up the healing process! whenever i get a purge, I'll spread some of this liquid on the area and by the next day it's less inflamed and red and on the way to recovery. the most amazing thing about this product though, is that it doesn't dry out or irritate my skin like other spot treatments- and that's saying a lot, because my skin is very dry and sensitive! this really is another miracle product from CosRx. just be sure you're not allergic to propolis before using this!