How to make your hair not greasy?

The reason why you have greasy hair is because you wash it everyday. You need to shower, but washing your hair everyday whilst you shower is bad. The more often you wash your hair, the more greasy it gets and quicker. So don't wash your hair for a week ( I know its a long time, but trust me) Then wash your hair. Wash your hair every 3-4 days, then you will notice your hair does not get greasy quickly and will take longer to produce the natural oils (grease).