My personal Acne tip!
I bet no one has tried this.
But since I wear glasses, I like to keep my face dry so the grease won't build up and my glasses would stick to my face. Therefore every 2-3 hours I would go to the bathroom and wash my face with water, then wipe it dry with a paper towel.. YES! the paper towel actually absorb the oil really well.
And I don't care what other people say about washing my face with a paper towel, I just know that my face is the least greasiest and it feels great!