Tipping for hair & make-up trial….

Tomorrow I have a hair and make-trial with the same person.
So what is the etiquette for tipping? Do I? or do I only if I like it? Is 20% the norm??

Help!

TYIA!

The rule is that if you go to a salon, you tip. If they come to you and/or own the salon, you do not have to tip.

Tipping is usually 15-20%, at your discretion, and can be more if you really liked their work etc. HTH!