Sustained improvement of surgical scar appearance one year after early intervention with nonablative fractional laser treatment: a randomized controlled split-wound trial.

Early laser treatment during wound healing has increasingly gained focus to improve scar formation1 . The majority of trials addressing early laser intervention for improving scar formation present short follow-up time of 1-3 months2 . Considering the pathophysiology of scar formation, a scar is not mature until a year post-injury. Thus, the effect of early laser treatment should be evaluated at least one year after scar intervention, and knowledge about long-term effect is lacking3-7 .