I recently started putting oils on my length, grapeseed or coconut oil...I like the shine and I feel my hair is stronger with the oil.
I read that grapeseed is especially beneficial to the skin, doesn't clog up pores so I think it would be good for the hair....... it is however, slightly astringent so it may not be good for some.
I like Grapeseed because it gives me shine, without weighting my hair down. When I use coco oil it tends to be heavier, so I'll use it after the 3rd day of washing. I usually wash on the 4th or 5th day.