I have thick, black straight hair that tends to wave slightly at the ends. I have problems using shampoo because my hair becomes greasy again sometimes several hours after washing with some products. I wash my hair and let it air-dry. I also use conditioner very rarely because most brands weigh my hair down. I color my hair also. Upto date I've use Paul Mitchell (Awapuhi and Tea Tree), Kiss my Face, Clairol, Head and Shoulders, Neutrogena, Matrix and Burts Bees because someone recommended natural shampoos. Nothing makes my hair look good except for the Awapuhi (before they changed the formula) and good old Prell which I've used out of sheer desparation. Does anyone know of a good shampoo/conditioner combination for thick and greasy hair?