only reason to make zinc light blocking cream is if you are white and you spend so much time outside you get blistered nose

and you gotta slather it on thick

better to just wear a baseball cap... legionnaire's cap with the cape behind it if you have problems with burned neck as well

also, in both cases a broad brimmed hat works

cowboys wear broad brimmed caps for a reason - cos they outside in the sun all day chasing cows around and that's their damn jerb