I've used this 6 times now and have already seen a huge improvement with my acne scars. I started noticing a good improvement after 3 uses. Do your research, watch the YouTube tutorials. Make sure you take the steps to do it right to avoid further scarring and infection. I was a bit nervous at first, but I am so glad I found this. I've struggled with acne scars my entire adult life, and finally found a product that is actually getting rid of them after years and hundreds of dollars of at home treatments. I never go over 1.5 depth, and space my treatments 4 weeks apart. I give myself 1-2 days recovery of no makeup and no sweating after each treatment. I also use hyaluronic acid generously during and after each treatment and don't wash or touch my face during the recovery time. I also use numbing cream beforehand. I put it all over my skin, and cover it with plastic wrap for 20 minutes. Then make sure I completely remove all of the cream before starting the treatment. Your skin will peel a bit afterwards. Don't peel at it or touch it. Just let it do its thing. You basically look a bit sunburned during recovery. I can't wait to see the difference 4 more uses will make. If you struggle with acne scars, you've finally found your solution.