308NM excimer light is excimer light with xenon chloride gas as the illuminati nation source which can induce T cell apoptosis which can accurately treat the psoriasis vitiligo eczema and dermatitis, and treatment time is short. A single 308 NM is considered to be the optimum wave length for vitiligo and psoriasis treatment. It is considered as an effective treatment as an effective method to treat skin disorders such as vitiligo & Psoriasis