I don't really think it's true for anyone. As someone said earlier, guys who say they like girls without makeup usually mean they like girls with minimal makeup.I find it hard to believe that so many guys supposedly like the 'natural look', when most girls that guys seem to like are never seen without make-up, nails done, hair extensions etc. Obviously it's true for some, but it seems like one of those lies that sounds good, so everybody uses it (much like girls who say the most important thing in a guy is his 'sense of humour').
The whole point of makeup is to accentuate a girl's best features and disguise her worst ones (subtly or otherwise). By definition, if a girl doesn't look better with makeup then she's not wearing it right.