Hair Cuts at Great Clips (or where ever) do you tip?

Yes you should tip ---- You should always tip anytime someone is performing a personal service for you. (Waitress, bartender, pizza guy, take out at a restaurant, hairstylist, concierge (at hotel), bellman(at hotel)...etc)

If you can afford to tip at least 15% you shouldn't be going out to use these services. Most of the folks working these jobs are being paid 1/2 of minimum wage to do them and rely on the tips to make the pay at least minimum wage.