How much do you tip at the nail salon? (manicure, pedicure, fills etc.)?

Thanks!How much do you tip at the nail salon? (manicure, pedicure, fills etc.)?
If the total is 15 dollars or under, give 3. 20 dollars or under, give 4. 25 dollars or under, give 5. Over 30 dollars, 7.How much do you tip at the nail salon? (manicure, pedicure, fills etc.)?
you're supposed to tip?
I don't go to ';the nail salon';