Most Helpful Girl
Baking soda- I'm not kidding. It works. You get ~tablespoon of baking soda (or more if you have really long hair) ? mix it up with some water to make a paste ? put it on your head ? scrub ? rinse thoroughly w/water ? follow up w/a vinegar rinse
Vinegar Rise: one Tablespoon Vinegar (any kind works) + 2 cups water ? mix & rinse your hair with it
Part of the reason your hair gets oily is because shampoos can dry out your hair & scalp, then your body produces more oil to compensate. The great thing about this method is it's impossible to screw up & it won't dry your hair out.