Eli5 – Why would one choose SPF30 (or less) when SPF50 sunscreen is widely/readily available?

Question

Eli5 – Why would one choose SPF30 (or less) when SPF50 sunscreen is widely/readily available?

In: 4

Answer 1

Also sunblock either uses physical or chemical method to ‘block’ harmful rays. Physical method may be preferred to avoid less natural chemicals but physical block can only get to maximum SPF 30.