Lasers and Energy Devices for the Skin: Conventional and Unconventional Use

(i) UV laser and light sources: they have been used primarily for the treatment of inflammatory skin diseases and/or vitiligo, as well as striae. The mechanism of action is immunomodulatory. The XeCl excimer laser emits at 308 nm, near the peak action spectrum for psoriasis. Other UV nonlaser sources like the 355 nm have also been used for vitiligo and hypopigmentation disorders and various inflammatory diseases. The paper by N. Zerbinati et al. contributes to explaining the mechanism of action of the 355 nm laser.