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What is PUVA? PUVA or photochemotherapy is a type of ultraviolet radiation treatment (phototherapy) used for severe skin diseases. PUVA is a combination treatment which consists of Psoralens (P) and then exposing the skin to UVA (long wave ultraviolet radiation). It has been available in its present form since 1976.
PU is short for polyurethane. This is a food safe and rubbery textile that is made from a foamy-like plastic. It's a material used for food trays and other products you serve food on. However it doesn't hold up well and can warp when heated in just the hottest of running water.