I just left a hair salon after a first time visit for a cut and colour. I’m happy with the result and would like to go back again. Altogether the cost for the services was $135....I tipped $20, which I realize now is just under 15%. Is that too low? Do you think the stylist will be offended and not want to book me again? I usually try to tip generously so I wasn’t purposely trying to be cheap...it just seemed like a good amount at the time I was paying. Am I worrying for nothing?