Once you hair has been well nourished using Paraban & Sulphate free shampoos and conditioners.
You need to lock in that moisture by smoothing over or sealing the cuticle layer of your hair strands. The best way to do this is either by using a reputable oil based product or by using an excellent leave in conditioner.
A good leave in conditioner can also be used as a styling aid. This would help to reduce the impact of using heating tools on your hair (Hairdryers, Straightening & Curling Irons) as well as to maintain the look you desire when styling your own hair.