I stumbled upon this on the verge of giving up. I've been struggling with adult acne ever since I hit my 20's and recently came to a point where nothing was working anymore. I had been using every product "meant for acne prone skin" from prescription products, bha and benzoyl peroxide just seemed to be a waste of time or cause my breakouts to worsen. I tried this product at my lowest point, I had cystic acne, and just all over scattered acne and blackheads that seemed to be never ending.. I didn't know what else to do and then I stumbled upon this! I found a sample of it I had received with my last order, and decided to give it a shot. The next day some areas my breakouts were drastically smaller while cystic acne I'd had for about a month with no signs of coming out of my face came to a head after a few days. I was ecstatic. I've tried glycolic acid products years ago but benzoyl peroxide and bha's were so engraved in my head as the "go to" acne products I had completely forgot there were other options. It's just an added bonus that this also helps with aging and dark spots etc. literally a holy grail product and light enough it doesn't bother my sensitive skin. I'm so thankful I tried this sample and will continue to purchase this product! Lifetime customer. Thank you Paula!