research 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.