Hi. Im a hairdresser so hope I can help!
Theres a few reasons why your hair is better from the salon. a)the products used make a HUGE difference, we couldnt do our job without products. and b) the fact you are having it blowdried properly and thouroughly.
Get yourself a nice shampoo and conditioner, salon based brands Do make a massive difference, a product to put on before you dry, ie, a smoothing balm or root booster, and then a product to put on once you've finished such as a shine spray. all these things make a big difference and are worth the money.
When you dry your hair, make sure you blast it 80% dry, using a nozzle and pointing the nozzle downwards on the hair. then do your best to section the hair off and use a round brush or paddle brish to dry the hair, still with the nozzle pointing downwards. once youve done this all over blast with cold air which seals the cuticles creating shine!
HTH!