read with interest the article of Dr Asilian and coauthors entitled “Comparison between the efficacy of Q-Switched 1064-nm Nd:YAG laser and Fraxel CO2 laser on improvement of atrophic facial acne scars” in this journal. In this article the authors concluded a better efficacy for fractional CO2 laser in comparison with 1064-nm Q-switched NdYag laser.1 Treatment of the atrophic acne scars is a re...

INTRODUCTION The Q-switched 1064-nm laser is associated with rapid vaporization and thermal expansion stresses leading to skin mechanical damage and is typically used for correction of exogenous and endogenous deep pigmentation. Giving the common place of fractional, infrared-domain milliseconds non-ablative lasers in aesthetic dermatology, a novel non-ablative fractional Q-switched 1,064-nm la...