Phototherapy, or light therapy, involves exposing the skin to ultraviolet light on a regular basis. Of course, the tradeoff is that you’re putting skin at greater risk for sun damage (wrinkles, dark spots, loss of elasticity) and skin cancer. Still, if you’re desperate (and we understand why you would be), this form of treatment can significantly eradicate psoriasis symptoms. How does it work? Ultraviolet light suppresses the skin’s immune response, reducing the psoriatic inflammation, which in return slows down the reproduction rate of skin cells that cause scaling. Discuss this option with your physician to find out whether it’s the right treatment for you.