The Advantages of Excilite μ over Traditional Phototherapy Excilite μ combines the advantages of traditional phototherapy with UV lamps (such as NB UVB or PUVA) and phototherapy with excimer lasers. Excilite μ protects the healthy perilesional skin thanks to its special filters, it minimizes side effects such as erythema and burns, it doesn’t require the use of drugs, the re-pigmentation process is faster and effective in all areas. Excilite μ in Comparison with Excimer Lasers Like excimer lasers, Excilite-μ has a monochromatic emission with the same wavelength of 308 nm and high intensity (50 mW/cm²). However, compared to lasers, Excilite-μ offers significant advantages: Treated areas are larger (30 cm² spot size), treatments are faster and the maintenance costs are significantly reduced.