I have often wondered about this.
I remember the days of single digit SPF values.
When did SPF50 become the norm?
nostr:nevent1qqs0yu7ea8wadpjuys5py34fu66l3m8h72hpdtzf2t5ffz84lrvxz3cpzamhxue69uhhyetvv9ujuurjd9kkzmpwdejhgtczyz9r4y3k6r4wd0yjavthst2haq52q8cre55d835zjlr7r8fhfw2pjqcyqqqqqqg2sf6r7
#askNostr
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I'm out in the field 12 hours a day with no sunscreen in Wyoming at 6800 ft, no problem!
