I find it hilarious how all guys here chose "no makeup" when in fact they all masturbate on pornstars with tons of makeup, are attracted to girls that wear at least some of it and don't really know when girl is actually wearing it or not.
I'll be honest though. I like women that know how, when and how much makeup to apply. It depends on her style, facial features and occasion. Wearing makeup on a Sunday stroll in park is stupid but not wearing any in a club on a Friday night is equally stupid in my opinion.
The vast majority of guys hate makeup unless it's used for a formal event or purposes of filming or theatrical acting. It looks unnatural, as if you're hiding who who are. A guy wants to see his girl for who she is, not necessarily for who she wants to be.
I personally see it as a distraction. I can't stop looking at it and thinking "What the hell is she thinking?" or "Is that REALLY necessary?" And I just can't see the girl for who she is anymore.
Regardless of blemishes or skin imperfections, a guy will always see his girl as being the most beautiful without makeup.
Girls only wear makeup to look a certain way for other women, because it surely isn't for us guys. Remember this. And it's very simple: The more natural you and your body are, the more attractive they are to a guy. Anything fake or false or added or taken away is a compromise.