ScienceDaily (Oct. 10, 2010) — What happens to sunscreens when they are exposed to sunlight? And how is the skin affected by the degradation products that form? This has been the subject of research at the University of Gothenburg and Chalmers University of Technology that will be presented at the upcoming dermatologist conference in Gothenburg.
http://www.sciencedaily.com/releases/2010/10/101010183700.htm