What I do to make my hair not look greasy and to remove the grease from my hair is to wash my hair every few days.
I use a dry shampoo which helps to suck up the excess oil and grease from my hair so that the hair is not as greasy as before.
You can also make a good natural shampoo to remove excess grease and oil from your hair using 1/4 cup arrowroot powder or cornstarch.
Another good home remedy for removing oil and grease from your hair is to use some apple cider vinegar to get rid of the excess oil and grease in your hair.
When you wash you hair you should pour a bit of apple cider vinegar into your hair and work it through your roots, and rinse it out.
The raw, organic apple cider vinegar is acidic enough that it helps restore the pH balance of your hair which rids the scalp of buildup.
The apple cider vinegar is gentle enough that it doesn't strip your strands of essential nutrients but It's also gentle enough to use on color treated hair.