Fraxel for scarring lasts... unless you have active acne.
Fraxel is a great treatment for long-lasting results. To change the texture of the skin, from acne scarring, multiple treatments may be required. Once the results are achieved, they are long term. However, Fraxel is not supposed to be used for skin with active acne, since treating it will not have any long-lasting effects since the scarring will reoccur post-eruption.
If acne is active there are other treatment options, such as Isolaz, to explore before treating the scarring...