The epidermis of the human skin has the ability to absorb light of certain wavelengths. This peculiarity is found to be extremely useful when treating skin disease. A newer type of UVB, called narrowband UVB, emits the part of the ultraviolet light spectrum band that is most helpful for Psoriasis, Vitiligo.The UVB psoriasis lamp uses that feature and affects the skin on the cellular level. It emits light from the very part of ultraviolet spectrum that stops the diseased cells growth.
Broadband UVB treatment has been cancelled in most clinics because narrowband is a lot more effective. It is also easy to use, so anyone can get remission of psoriasis at home with just one device.
The process is usually divided into two phases: