Well, my suggestion: use less cosmetics. You'll never know how they react with the sulfuric acid from the rain.

Your sweat should evaporate easily and not be blocked by talcum, titaniumoxide, aluminiumoxide, zinc sulfate and whatever you smear onto your skin. Don't block your pores, then nothing can accumulate and cause an inflammation.

Against dry skin drink more water. There is no better moisturiser than moisture. But it will take a while just like with a sponge.