The freshwater algae Tetradesmus obliquus uses a strategy to protect itself from UV stress; it develops a radiationstopping envelope of carotenoids when exposed to light.
The latest active ingredient from Rahn is Radicare-Gold, which reproduces this concept.
Natural carotenoids activate PPARy, which has a dual effect, defending skin cells from the ageing effects of UV-generated ROS and inhibiting lipid peroxidation.
