Well makeup should really be used sparingly, it should be used to enhance your natural beauty. Some girls do plaster it on and I think some girls look like clowns when they do it. We've been brought up in a society where "everyone" wears makeup and if you don't for some reason you're the freak! I myself only use a little bit of make up, a little cover sometimes and just eye liner for every day use, if I'm going out I add a little more on but not much. We think we need make up to impress a guy, because that's what the media has told us. Playing on our insecurities and using it as a marketing scheme
I dont know where you picked that idea up from. I think girls know very well that the REAL them is makeupless, but that doesn't mean she is comfortable showing off her real self to everyone. she gets used to wearing makeup out because the majority of girls do, so she is more comfortable like that.