There are many alternatives to the poisons sold as "sun screen".
Mrs BBB333 wears UPF 50 shirts that she purchases from Land’s End.
They let in only 1/50th of the UV rays...(the lowest amount possible).
She’s fair skinned and is going in late Feb. for her last PET scan (5 years since her last melanoma surgery — two egg size tumors in her pelvis).
She loves the shirts!
Example: