I am male, and acne runs in the family. Even now, at the tender age of 41, I still get acne outbreaks. Less face, more the back and the upper arms. I used to experiment with highly concentrated AHA-A and AHA-B acids, which was way much cheaper and produced good results, but also left my skin in a condition that I wouldn't have dared to leave the house for a couple of days. This product contains the most banal glycolic acid at 5% concentration, but it really feels different. I don't know if it's the hydrolized silk or liquorice, but when I apply it overnight, I know I will not have to walk to work the next day red-faced and with chemical burns on my skin. I find it a bit pricey, if you buy the small size. I used to buy two bottles for the price of one (of course, it was a few euros more expensive), but the double size is the same value. I would still prefer to have two bottles, because one remains unopened when you start using the other. Just bought this for my sister, it was me who recommended it to her. Being male, I feel quite proud to recommend something for women.