Jojoba Oil :
Jojoba oil controls overactive sebaceous glands (cells that produces oil), so try this treatment:
Mix 20 drops of Tea Tree oil with 4 teaspoons of Jojoba oil. Apply the mixture to dry,unwashed hair working it in a downwards motion to keep the cuticles flat.Comb through and leave overnight. In the morning , shampoo it out , rinse and condition as usual. Repeat this every 10 days.