Japan's Ministry of Health has approved two laser systems developed by Candela Corp. of Wayland, Mass., for the treatment of skin lesions. The devices, the AlexLAZR and the PLTL Pigmented Lesion/TATULAZR, use the company's alexandrite laser technology to treat brown pigmented skin lesions such as Nevus of Ota, Mongolian spot and traumatic pigmentation, as well as to remove unwanted tattoos. The US Food and Drug Administration has already approved the systems for use in the US.