Amazing results from having 5 derma-pen treatments. My skin had red acne scars mainly on my checks and chin area, with some active acne. Nothing had been working for my skin...until this. The treatment was painful the first session and I had severe redness/peeling of the skin afterwards. But the process was worth it. After the second treatment the procedure did not hurt as much and I started to see lightening of my red scars. I had to be careful not to go into the sun for a week or so afterwards (so better to do the treatment in winter months), and had to use extremely gentle skin care to avoid irritation. After 5 treatments, most of the scars were not visible any more, and the ones which were had faded considerably. I really recommend this treatment- now I don't wear concealer or foundation and feel more confident with my skin than ever.