There's also the effect that sunscreen makes you spend more time in the sun than if you didn't use sunscreen because you think you're "protected".
there is also that anything that blocks UV (sunscreen, windows, etc) by definition blocks UVB first and then UVA, and UVA is the one that penetrates most deeply and has few benefits
You are saying that, even if you wear sunscreen and avoid sun burn, the UV exposure will still potentially lead to skin cancer?
I'd like to see the primary research backing that up. Or be told how I misinterpreted your statement.