Hey R & P! Got another question for you:
How well does betaine salicylate work compared to salicylic acid? Are the two comparable in regards to preventing blackheads and controlling sebum? More specifically can Cosrx's 'BHA Blackhead Power Liquid
' (4 % betaine salicylate, pH 4.0) in theory work just as well as Paula's Choice 'BHA
' (2 % salicylic acid, pH 3.2-3.8)?