A Question of Etiquette

Many years ago my mother told me that it was not proper etiquette to tip a salon owner if he or she was the one who cut your hair.
Can you bring me up to date on this, since most of my friends disagree?
Thank you.

According to this site:

But I always tip, regardless. That’s how my momma raised me.

From DeVena’s cite:

The turn of phrase here amused me. One can see FEMA receiving an invoice with “…and $20 for my hairdresser; Charley completely ruined my hairdo!” :smiley: