Honestly, i purchased this serum on a whim without thoroughly looking at ingredients etc. I wanted an alternative to BHA serum i currently use and this one has salysilic acid, so i decided to buy it. However, i highly doubt there is any effect from the salysilic acid in here. Idk what ph is of this serum, but it has alcohol in its ingridient list, which would definitely pull ph towards alkaline or neutral side. Overall, it has gel-like texture, absorbs very quickly, slightly hydrating... and that's it. Didn't do much good, nor harm. Personally, wouldn't repurchase.