Sweaty face

The temperature here in Siem Reap is just like in the Philippines very hot and humid. We were all sweating in the ministry area as we did our hygiene thing with the kids. Our team are all getting darker and as I look my face in the mirror when I showered the second around I was worried I might get pimples because I had an oily and sweaty face. I am worried that when I get one I won't be able to treat it and it will go bad and become an acne. I knew some people that don't know to treat acne reason why theirs go big and look gross!
I am hoping though that I'll get some beauty treatments and rest when I get home.