Someone help me with this "hair detox"

I have probably spent 100's of dollars on different hair products, not so much styling products but that special "shampoo" that would give me that silky sheen that so many women have.

So I finally just gave up, and went to this natural store and bought a three dollar all natural shampoo/body bar. Suprisingly after the first use my hair was suprisingly soft, but I still would perfer it to be a bit softer. So i'm really interested in this olive oil detox.

Can anyone share their experiences on how long it took them to "detox" their hair. Was it a couple of weeks or days before your hair became less greasy and more soft and shiney? and how many olive oil treatments did you do?