If he’s american, then he’s slightly correct because American sunscreen is outdated and exaggerate their protection claims. It’s better than nothing, but if you actually want to spend your money on working products, look into sunscreen developed in EU countries, Japan, Korea, and Australia.
My grandpa thinks there's poison in sunscreen after having melanomas cut out, he at least wears a wide brimmed hat now.
If he’s american, then he’s slightly correct because American sunscreen is outdated and exaggerate their protection claims. It’s better than nothing, but if you actually want to spend your money on working products, look into sunscreen developed in EU countries, Japan, Korea, and Australia.