What is the best shampoo for oily hair?

I used to have long hair that needed a lot of conditioner, now its short and no matter how little i use i feel like my hair gets oily a day after washing. is there a shampoo that is good for oily hair?What is the best shampoo for oily hair?
When you condition your hair, try avoiding your roots because this is the area that produces the oil. Just condition the lower half of your hair.What is the best shampoo for oily hair?
I really like this shampoo called Aussie. You can spot it really easily cuz it is purple.
somethin with citrus in it..the only thing i could seem to find was head and shoulders citrus breeze. i dont even have dandruff but it helped with the oilyness. then i used aussie conditioner, ';Cleanse and Mend'; worked great