The data has shown sunscreen to be useless for a long time. 3 things have been steadily going up for over 20 years: American use of sunscreen, America’s rate of skin cancer, and America’s rate of vitamin D deficiency. We don’t actually know what part of the the solar spectrum contributes to skin cancer, but it’s quite clear sunscreen does nothing about it.
My late father-in-law, a construction worker who worked outside, was anti sun screen.
Take the sun in moderation. Don’t fry yourself for hours in just a bathing suit.
The lack of Vitamin D contributes to cancer. That’s why sunscreen use is linked to higher cancer rates, and not just skin cancer.