The use of fluorescent lamps for the therapuetic treatment of skin disorders has been well established for more than 4 decades and during this time period a number of different sizes and types of lamps have been developed to address the variety of treatments necessary in this field. Since 1981 these lamps have been subject to regulation by the United States Food and Drug Administration and all sales of the listed lamps must comply the rules in effect at the time of purchase. Currently, this means that a state medical license or an individual prescription is mandatory for purchase. Although a prescription is required for individual purchase it does not prohibit the opportunity for home therapy via relamping an existing home medical device or the construction of an individual device for home use. Please consult with your Kelsun sales representative about your particular clinical or residential treatment requirements to ensure the proper lamp selection for your existing device or design parameters.