I have below shoulder length highlighted hair (fine, lots of it but getting slightly less as I age).
Usually I wash it - with a very moisturising (probably too moisturising) shampoo and conditioner, then coat it with Tigi Bed Head Ego Boost - a leave in conditioner - if it dries in time I put a serum on it (Aveda Light Elements) and a finishing cream - Redken Outshine 01.
I posted here about the condition being straw like.
Anyway - got some Herbal Essences Passion Flower and Rice Milk Nourishing Shampoo, L'Oreal Dream Lengths Rapid Reviver Long Hair Power Conditioner - let it dry naturally and bloody hell - straw gone - or hardly any!
It's a miracle I tell you.