Alternatively, you can try LED treatment. Founder of Pfeffer Sal, Andrea Pfeffer, told us, "We have Dermalux LED Machines, an LED phototherapy technology which is non-invasive and promotes skin health, accelerates cell renewal, and can help to resolve problematic skin conditions including Psoriasis." According to Pfeffer, "the Tri-Wave light is much safer than the traditional UV phototherapy (which has been linked to skin cancer) and has been clinically proven to reduce plaque psoriasis."£50 per session or £500 for a course of 12, Pfeffer Sal