Cosrx bha power liquid is a popular korean exfoliant. It claims to reduce blackheads formation, reduce sebum production and promote cell turn over. I have been using it since two months. Its a very gentle bha exfoliant compared to paul's choice. It leaves skin slightly hydrated and not feeling tight. Gentle enough to be used everyday without experiencing peeling ad with other chemical exfoliants
. Its effect on removing minor blackhead is noticeable but stubborn blackheads don't budge to it.
It also works to clean and reduce pore size slightly.
It can be used daily, overall its a gentle bha liquid, don't expect miracles with it overnight, but it does work slowly and steadily.