Protects the skin from excessive light absorption. See UV index below. In addition to physiological light protection, i.e. light callus, there is also artificial light protection provided by textiles (clothing) or (chemical or physical) light protection agents. Recently, orally administered substances have also been advertised as photoprotective agents (e.g. Polypodium leukotomus extract [PLE] obtained from a Central American fern plant, e.g. in Heliocare capsules; see also β-carotene below).
For more see below. Light protection