SPF – sun protection factor! SPF 50 is estimated to filter 98% of UVB radiation, with 1/50th (2%) reaching the skin. Both can provide excellent protection if they are applied properly. Sunscreen SPF50+ needs to be applied liberally, just like any other sunscreen when you sunbathe.

Bidder's edition rewarded to bidders on "Sunbathing Residence".
https://foundation.app/@JKTLM/lp-3579/11