I’m on the road about 50% of the time for my job. I tip based on service. I’ve never looked at the hairstyle of the waitress and determined the tip. Maybe I’m not shallow enough
Let’s face it-if the server is a 10 in appearance, but sullen and a poor server, only the most dweebish of people of either sex would tip extravagantly.
Most guys I know are suckers for an attractive woman, with a fetching smile and a nice personality, even if the service is so-so.
But the sour-puss and poor service, even from an attractive server-people don’t fall for that.