It may help, but it won’t create the skin you had before the scarring occurred. The atrophic or thin skin may develop more collagen in the dermis as a response to the Fraxel but your scar may remain thin and white. I would approach this as I do with mature stretch marks. Do a test spot several times on the same scar, not all the scars. If there is improvement that you’re happy with, you can treat more of them at one treatment. Many doctors are not interested in just treating a small area multiple times. See if your doctor would consider this and what the fee would be.