Who should I tip and how much should I tip at a high end salon in Atlanta?

Next week I'm going to a high end salon in Atlanta, but I'm a bit nervous because I have no idea how much to tip the stylist and how to go about doing so. My bill is probably going to be around $160. I'm not sure if they have a seperate person that does the shampooing, but they probably do. So should I tip both the stylist and the shampoo person? And how should I do it...just hand them the cash after they are done, or wait until I go to the receptionist and pay with my card and leave a tip on the receipt (like you can do at restaurants sometimes)?Who should I tip and how much should I tip at a high end salon in Atlanta?
As a client of high end saloons and spas in Atlanta, I know that you should never tip less than twenty percent. Tipping less will only produce unsatisfactory results for the service. These people are experts in their field and should be compensated accordingly. I tip at least thirty percent. I have known acquaintances who did not tip, only to come out with a bad hair cut and/or treatment on the next scheduled appointment. I do not associate with those people any longer because I feel I am better than they are. It is all a matter of class, culture, and correct breeding.Who should I tip and how much should I tip at a high end salon in Atlanta?
Without worrying about a snobby/arrogant attitude wherein one associates proper tipping with correct breeding with regard to tipping, no matter where you go, or whether it is a high end salon or a Super Cuts walk-in haircut place where you can get $10-15 haircuts, one should tip a minimum of 20%. If the service and style were exceptional, then it would be fine to tip 25-30%, but it isn't necessary to tip more than that, especially when paying so much to begin with. If you wanted to tip each person who has a part in the styling of your hair, that would be okay to do so, but make sure you tip the person doing the bulk of the styling a greater percentage of your tip than the person washing your hair. A safe practice is to pay the cashier for the service you received and add a tip on top of that and tell the cashier that you would like the tip to go between the stylist and the person who washed your hair. Then it couldn't hurt to tell each person who worked on your hair that you left their tip with the cashier so that they will know that you did indeed tip them (in case the cashier decides to keep part of the tip or give the entire tip to only one person). This lets them know they were tipped and gives them the opportunity to work out a fair arrangement over who gets what percentage of the tip. As long as you tip a fair amount, you should be comfortable going back again without worrying about any hard feelings.