I'm a stylist, and yes, if the stylist owns the salon you still tip. That is a really weird belief that owner stylists don't need tips.
Some salons take steep commissions, some pay really well commissions, some pay hourly at an amazing price, some pay hourly at a crappy price, and some stylists make millions a year, while others would make better money working at McDonald's, some rent their chairs and make a killing, some rent their chairs and cry every night b/c they are broke... it just depends on the salon and the talent or sometimes luck of the stylist. But the tips are always the stylists to take home and they rely on that as their pay.
If you have a good assistant or shampoo girl, they get a tip too if they do a job well done. I assisted for a while when first starting out and a woman gave me a $20 b/c she said it was the best service ever... I was totally floored!
So yes, if the stylist does a good job, not only tip, but refer your friends to him/her! :)