No Nivea or Himalayan Herbals? Ah man.

The only reason why I say this is that there's this cool video on YouTube from Veritasium who looks at Sun block and how it works etc.

It literally coats your skin with a blocking agent you can see. Idk how intense the emsun is there but here in Africa it's Poes hot and sapping, so you need at minimum SPF 50