>>5126357the girl in OP's pic is what one would call an average looking girl, so she has to use makeup to bump up her looks.
If she was actually born with 8/10 facial features, she'd probably look just as good with or without makeup.
But lets talk about an average looking dude. If he had a round face with soft features, makeup could definitely help increase his looks. But if he had crazy masculine features like a strong brow, lantern jaw and chin, makeup wouldn't really do much. Maybe guyliner, but that's about it.