Prevention of Unintentional Overexposure in Topical Psoralen Treatment of Vitiligo

Psoriasis improved by psoralen plus black light

“…Bulla formation and pigmentation appeared to relate directly to the use of increased concentrations of psoralens and prolonged black light exposure. Benzophenone sun screens applied over treated areas between visits may help avoid an added effect from the sun or other ultraviolet light sources while the patient is using psoralens (6 ).…”