Abstract
The last decade has seen numerous advances in the development of photoprotective sunscreens. There have been significant improvements in the sunscreening chemicals as well as vehicle preparations, yielding much higher protection factors and enhanced substantivity. In addition, novel sunscreening chemicals are currently being explored that provide protection against ultraviolet A (UVA) radiation. This chapter briefly describes both traditional and novel methods for evaluating sunscreening agents, discusses the recent evidence supportive of the view that UVA and infrared radiation exert pathologic changes in the skin, and provides the private dermatologist with additional information by which he or she can better understand the sunscreen literature and manufacturers' claims.
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