Excimer 308nm laser is an ultraviolet B radiation system consisting of a noble gas and halide. It is a form of targeted phototherapy and can spread a certain wavelength 308nm of UVB radiation with excimer light or laser. Considered to be one of the choices to deal with severe local vitiligo and psoriasis.
Different from the common NB-UVB Light, Excimer 308nm UV-Light system is usually considered a single-rate excimer light by using XeCl as illumination. The wavelength is also considered as the best one to treat Vitiligo and Psoriasis. The basic effect of 308nm UV-Light is promoting the differentiation and development of hair follicle melanin stem cells and stimulating the remaining melanocytes of the outer sheath of the hair follicle. In that case, to increase and move the melanin split to the epidermis. In this process Vitiligo can be significantly improved and treated.