Ultraviolet Light Therapy
Ultraviolet A light is also proven to treat psoriasis. This light is also found in sunlight. You expose your skin to the artificial light for some minutes, and you keep doing this regularly. The only setback is just that form of light therapy is not as effective as ultraviolet B and it takes much longer. To get your desired result, you will have to expose your skin to the light for 15 to 30 minutes. [10]
