Holyyyyyyyyyy crap. I randomly picked this product because it was on sale and I was thinking of adding glycolic acid to my routine. I've been using these pads one week and already I think my skin looks amazing, no lie. It's smooth, there's fewer blemishes popping up, and I *think* even some dark spots are fading. It does burn my skin a little, so I only use a pad in the evening - it got worse the day I did morning and evening. So if you have extremely sensitive skin, I wouldn't recommend this. But if you can tolerate a little, then it's great. In the evening I take my makeup off, then wash, then use this pad, and then after that moisturizer and acne treatment. I love this, and will buy many more.