Daily use of shampoo can strip your hair of its natural oils and indicate to your body to produce more, making it "greasy" if you don't shampoo. It's an ugly viscous cycle! Try extending the life of your wash by a day at a time.  The result will be healthier hair and less time in the shower.  For help along the way try AMN Baby Dry Shampoo. Sprinkle just a bit into your hand or in your hair and rub into your dry roots on those "not quite ready to wash my hair" days.  The powder absorbs excess oils on your scalp giving you a just washed look.  Can be made in 3 shades for light hair, red (with cinnamon), or dark hair (with cocoa powder).  Regular (light) powder can also be used as a baby powder!