Excimer light treatment is a targeted form of phototherapy used primarily to treat skin conditions such as psoriasis, vitiligo, and eczema. The excimer laser allows for precise application, targeting only the affected areas without exposing surrounding healthy skin to UV light. This precision reduces the overall UV exposure, potentially decreasing the risk of side effects and improving treatment outcomes. Sessions are typically quick and relatively painless, making it a convenient option for individuals who do not respond well to topical treatments or for whom large-scale UVB light treatments may not be suitable. This is usually undertaken in weekly intervals for optimal results and the number of sessions may show individual variation and is response dependent.