I have had new extensions fitted a few weeks now, but I have noticed in the last week or 10 days that they are tangling quite easily. When I run my fingers through my hair, they don't run through smoothy and i constantly have to undo tangles or brush my hair to get my hair smooth again. Are there any products that will stop this happening? A friend of mine said morrocan oil or something similar is good for keeping my hair smooth, but does anyone have any suggestions??