If you are obsessed with having straight hair you might want to try Frederic Fekkai Coiff Controle Ironless Straightening Balm which will give a salon blow out at home. 

Frederic Fekkai Coiff Controle Ironless Straightening Balm is a non-chemical balm that straightens your hair as you dry leaving it super sleek.  Frederic Fekkai Coiff Controle Ironless Straightening Balm also resists frizz and fly-aways.  Cost: $25.