What happens next?

How to keep hair from getting greasy
Don't wash your hair every day.
Washing the grease from your hair may seem like the best solution at first, but daily washing actually causes your hair to produce more grease. Your hair tries to make up for the natural oils you're washing out each day, causing a cycle of increased grease.
Wash your hair only 2 to 3 times per week maximum for the best results. Wear a shower cap on days that you don't shampoo.