Did you know your hair will over produce oil if your hair is dry?
So the answer to oily hair isn't actually to dry it out more, its to give it the moisture it's asking for so your scalp dosen't need to over produce it's natural oils. 

Using hair oil on your ends will lengthen their life drastically, but don't stop there. Your hair will love a couple drops of hair oil all the way up. Start with the ends when it's most concentrated on your hands, and slowly work it in further and further up. Make sure the oil you're using is pthalate free, and made up of nourishing ingredients. 

That is why the Take Down Remover Detangler cream works so well on horribly matted tangled hair.  It is an oil based cream.