Laser systems designed to treat psoriasis can deliver targeted ultraviolet light to areas of concern for psoriasis symptoms. Light therapy has been used to treat psoriasis for many years, but lasers offer better precision for treatment and can reduce the potential for negative side effects by reducing the chance of exposing healthy skin to the UV light. Current laser systems are also able to penetrate more deeply into the skin, so you require fewer treatments versus traditional light therapy. In general, you will be required to undergo approximately 1-2 session per week for 4-10 weeks in order to maximize the efficacy of your treatment. Following your laser treatment, your skin may be more sensitive to sunlight, so it is even more important than usual to practice effective sun protection immediately following your appointments.