research 604 Comparison of 1064-nm Nd:YAG picosecond lasers using fractional micro-lens array vs. ablative fractional 2940-nm Er:YAG lasers for the treatment of atrophic acne scar in Asians: A 20-week prospective, randomized, split-face, controlled trial
Both laser treatments improved acne scars similarly, but the Nd:YAG laser was safer and less painful, while the Er:YAG laser left patients slightly more satisfied.