UV radiation differs on the basis of wavelengths ... UVB phototherapy, in particular, is commonly used for this treatment.

Phototherapy, or light therapy, involves treatment with different wavelengths of ultraviolet light. The most common form doctors recommend for treating eczema is ultraviolet B (UVB) light.

This eczema treatment comes as an ointment that you ... Phototherapy exposes all or parts of the body to ultraviolet (UV) light in a controlled setting, usually at a dermatologist’s office ...