Any doctor, dermatologist, or medical site will tell you to wear sunscreen outside, anything else is pseudoscience

https://health.unl.edu/can-sunscreen-cause-cancer-how-avoid-benzene

High levels of benzene, a cancer-causing chemical, were reportedly found in several sunscreens, leaving some questioning if sunscreen can do more harm than good.

It's important to note that these results are from one study (Valisure), which hasn't yet been validated. Strangely, they also detected benzene in blank test tubes (no sunscreen), leaving some to question if the testing methods contributed to the levels detected.

Toxicologists note that even if you applied the worst sunscreen on the Valisure list to your entire body, you'd be exposed to less than half the amount of benzene you breathe in normal city air in a day. Benzene is also very unstable, so it's unclear how much would be absorbed through the skin.

Don’t let this study convince you to skip sunscreen altogether. Although benzene is a potential risk, it pales in comparison to the known, real risk of UV radiation. Instead, take the time to check that your preferred sunscreen isn’t on the list of contaminated products.

Regular sunscreen use can make a real difference in your lifetime risk of developing skin cancer.