AGAA4
I use much less conditioner now as it makes my hair limp. I just use it sparingly and rinse off quickly. It is fuller without conditioner weighing it down.
My hair used to be lovely and thick, though fine. Sadly I have a lot less hair now and find it has more body if I don't use conditioner, just a fairly rich shampoo. If it is difficult to get a comb though my hair I use a very little of one of the "leave in" conditioners, keeping it well away from my fringe.
I think that colouring your hair can give it more body, as it effectively "roughs up" the outside of the hair shaft to let the colour in, making it less silky and flat.