[toasty228]

> How did we get through the Neolithic Era without sunscreen?

By reproducing at 15 years old long before cancer is a problem? Skin cancer was probably at the very bottom of causes of death back then, by a fat margin.

They also didn't have tooth paste, tooth brush, soap, antibiotics, vaccines, so go ahead and live like a caveman... I'm 100% positive it'll have a negative impact on your lifespan