This was a part of my first AB products order! I noticed that I had many blackheads on my nose and chin so when I discovered BHA and read reviews aboutthese "actives" I decided to include them in my routine!
I choose the product many people rave about, this one :)
I don't know but I really have fun applying it (I use my hands not a cotton, so soft !!)
I noticed that my sking became better (I was even suffering from a breakout when I started using it and I guess it helped my skin recover!). I think it calms down the skin gently doing its work. I love it.