For those of you with stubborn psoriasis patches, who want something fast, effective and convenient to use, then the Dermalight 450 would be a perfect choice. It is mid sized, so that it will not take up so much room, and yet is able to treat larger patches of psoriasis speedily, making it perfect for home phototherapy. It has 6 bulbs, so is able to cover 6 times the area of the Dermalight 80 in one go. The Dermalight 450 is ideal for people who need partial or full body treatment, but want something larger and quicker to use than the Dermalight 80 or 180 models. The Dermalight 450 can be rested horizontally for hand or foot treatment or mounted vertically for body treatment. We have found this unit to be one of the best units we have come across, for convenience of use together with efficiency of phototherapy treatment.