Hi, I have tried this and cp serum for acne marks on the arms. I have had better luck with Vita K and glycolic facial cleanser. On my arms I started to use both about 2 weeks ago and most spots are faded dramatically. The scarzone product did nothing and the cp serum made them more red, and the mederma didn't seem to help either. I think the secret has been the AHA glycolic cleanser and then applying the Vita K. The results are unbelievable for me on my arms. My face always has a bit of a pink cast to it because of meds and tazorac, but I think the glycolic cleanser has helped to fade or slightly peel the red marks and indents away.......I have not tried the Vita K on my face yet as I am still trying to get clear.