A Pulsed Dye Laser with a 10‐mm Beam Diameter and a Pigmented Lesion Window for Purpura‐Free Photorejuvenation

BACKGROUND AND OBJECTIVES In traditional pulsed dye lasers (PDLs), power limitations and pulse characteristics have compromised purpura‐free procedures. This study evaluated a new PDL with a modified pulse structure and a 10‐mm beam diameter for purpura‐free photorejuvenation. A compression handpiece was used for targeting lentigines. MATERIALS AND METHODS Twenty patients with skin types I to III were treated three times at 3‐ to 4‐week intervals. The first pass was delivered through a 10‐mm compression handpiece to target pigment dyschromias using fluences between 6.5 and 8.0 J/cm2 with a 1.5‐ms pulse duration. A second pass was then performed with a 10‐mm spot with fluences between 9.5 and 10 J/cm2, a 20‐ms pulse duration, and cryogen spray enabled. Improvement was evaluated by comparing pre‐ and posttreatment photographs and live subjects 1 month after the third treatment. RESULTS In the majority of patients, >90% reduction of fine telangiectasias (