This is my first time using an Asian BHA, previously been using Paula's Choice BHA and it did not appear to be changing my skin. From the sanitary pump, the liquid is very thin and might escape between your fingers if you're not expecting it. I have been using this in combination with my Snail Ampoule for about two months and the redness in my cheeks have seemed to decreased. I still have redness but it is notably better. I'm certainly going to keep using this combination!