When buying a conditioner make sure you pick one with a “thermal protector” ingredient like dimethicone or phenyltrimeticone.  These ingredients protect your hair from heat, which is especially important if you blow-dry your hair. 

 When you are using conditioner, first apply a small amount to the ends,  where the hair is the driest.  Then work towards your scalp.  If you have a frizz problem, just keep the conditioner in your hair.  Do not rinse it out of your hair.  Wash and rinse your hair with warm rather than hot water.  The Hot water strips protective oils from your hair.  Make sure that you rinse your hair thoroughly after shampooing your hair.  Shampoo that is left on your hair can leave a residue on your hair, which dries out the hair strands.