lietuva@lemmy.worldto
No Stupid Questions@lemmy.world•[Solved] Why can't I apply SPF50 sunscreen twice to get SPF100 protection?

2 days
Us has 16 of uv filters aproved, whereas EU has 30+. Last UV filter aproved by FDA was in 1999. So us had old sun screens
its not smart phone, but not dumb, so what, is it an average joe phone?