List Of What Is The Difference Between Black Light And Uv Light 2023. Uvb light is used to treat skin conditions such as psoriasis, vitiligo, and eczema. Web although black lights produce light in the uv range, their spectrum is mostly confined to the longwave uva region, that is, uv radiation nearest in wavelength to visible light, with low frequency and therefore relatively low energy.

As mentioned earlier, uva is characterized by the longest wavelength, thus the least energy of all the types of uv light. This is the region closest to that of visible light. Uvb light is used to treat skin conditions such as psoriasis, vitiligo, and eczema.