A very good study by doctors Kono T, Frederick Groff W, Chan HH, Sakurai H, Yamaki T of the Department of Plastic and Reconstructive Surgery in Tokyo Women’s Medical University, Tokyo, Japan (tkono@prs.twmu.ac.jp)  just came out.

Pulsed dye laser (PDL) treatment of hypertrophic port-wine stains (PWSs) on the lips has demonstrated poor efficacy and a potential risk of dyspigmentation. PDL-resistant hypertrophic PWS can be safely treated with much greater efficacy with deeper penetrating lasers such as a 1064-nm neodymium:yttrium-aluminum-garnet (Nd:YAG) laser. 80% of the treated patients showed good to excellent improvement without complications.