l'oréal is crappy (we're almost flodded by their products here sigh) first because it's full of silicones, and second : you know those volumising shampoos that are supposed to give your flat fine hair that volume ? well, they do work, but your roots are sooo greasy. it took me a long time to get clean roots again.
i don't like much Garnier fructis (too "rich" texture) and Dove's shampoos. the one for greasy hair is actually the only one making your hair greasier than it was before. ewww.