Umbstyle.com

okay so here's the dilemma - i have naturally reddish brown hair..(think a bronzed brown, not a true redhead..) and i am not a big fan of red tones, so i usually dye my hair a dark ash brown which looks good with my brown eyes and tanned complexion. The problem is, I keep my hair fairly short because I like looking clean-cut, so when i get it cut and dye it, i have noticeable roots by the 2nd week which is very irritating, not to mention gets expensive. is there anyway i can avoid this, or even maybe lengthen the time before i get noticeable roots? Please help because I REALLY prefer my hair dark. Thanks! http://images.amazon.com/images/P/B0006TPFSW.jpg ^^^ my natural hair color.