I've always been in Tip Mode, for nearly everything. Hotel van drivers, maids, servers, the girls at Manchu Wok, hairdressers.. I more or less came out to my reg. haircut girl, asking her for help, since my first hair coloring and style, in February.. I tipped her close to 30% the first time! and somewhere around 20% after that.. She treats me very nicely, and is supportive.. Told her that I wanted a particular fem style (bob cut) pointed to a pic on the wall, saying, that's what I really want.. and she's kept me from making cut mistakes since.. Kept me on track.. So I tip her well, and she takes care of me..
Now that's for hair.. I would do the same for laser,or electrol tech too, if they care for me, I care for them..