Q: Why not use sun-blockers, so you can get light without getting burned?
“If a sunscreen lotion is based on the use of an opaque reflective material, such as zinc oxide or titanium oxide, that substance remains mostly on the surface of the skin. This should make it fairly harmless, though it is possible that traces of titanium
could be absorbed with oils into the skin, where it could be made toxic by interaction with ultraviolet rays.
However, other chemicals used in the sun screen lotions, such as PABA derivatives, also react dangerously with light, and are easily absorbed in significant quantities into the deeper layers of the skin, where they can cause mutations.” -Ray Peat
https://expulsia.com/health/peat-index/sunlight-using-it-to-enhance-life.pdf
Author
Cari