GUys: do you like it when girls wear no makeup?

Ok. so the second time i met my brothers REALLY cute friend i was wearing no makeup in sweats. and he did a double take (partially because i used to be overweight the first time i met him) then the next time i wore a little bit more, and last night i wore a bit more and my hair was done. and then this morning (cause he slept over) i was wearing no make up, in PJs, with hair up. SO it seeemed like he liked it both ways. But do you personally like girls who wear light makeup, or a little heavy?