Abstract: A dermatological laser apparatus and method in which at least three lasers generating at least three wavelengths of coherent radiation of known efficacy in the treatment of medical or dermatological conditions are provided in an integrated system. In the preferred embodiment, at least three lasers are combined in a console. The console houses some of the lasers along with cooling means, common power supplies, and control means to select among the available lasers. At least one of the lasers is generated in a handpiece. In an alternative embodiment, the handpiece is provided with means to accept interchangeable laser components.