Sunscreens can cause cancer.
It's just a rumor...there's no convincing evidence that using sunscreen causes cancer.
But there IS strong evidence that using sunscreen PREVENTS cancer. Sunscreens can significantly reduce the risk of both squamous cell carcinoma and its precursor, actinic keratosis.
Sunscreens were originally designed to protect only against UVB radiation. More recently, UVA radiation protection has been added to help prevent skin damage and cancer.