Glow Tonic by Pixi : It contains glycolic acid, the holy grail of beauty product ingredients, which is supposed to remove the top layer of skin by breaking down skin cells, thus making you look fresher and younger!
Which one do you use if you have blackheads? Both are good for unclogging pores. Here's why: SALICYLIC ACID This is the only acid that can penetrate oil. (Because it is oil-soluble. All other acids are water soluble.