My wife is black and has sensitive skin. She once tried zinc oxide sunscreen. If one wants to be protected from the sun while cosplaying as purple monster, it's a great choice.

This truly is the biggest drawbacks. It's almost impossible to make zinc sunscreen see-through. One technique is to micronize the zinc but this comes with its own set of risks including skin penetration and environmental risks that micronized zinc can pose to aquatic life.

I think the only solution is to embrace it. There isn't really a 100% safe sunscreen that is also invisible

I'm light-skin and look like a ghost with Blue Lizard. I can't imagine how ridiculous it must look on dark skin.