Beauty Bag Making:  customize 5 piece and purse (lip gloss, bath salt, body lotion, body mist, glitter gel) (can substitute hand sanitizer if you like)
$15 per purse/bottles/supplies
$35/hour for attendant to help with mixing essential oils and color agents

Jewelry Making:  we bring a multitude of string and beads and the guests can make necklaces, bracelets, anklets while they are not in a spa station.
$35 for up to 10 guests

Bath Salt Making:  we bring the fizzy, the softener, the salt and the silk...  the guests can mix their own and take with them as a goodie bag.
$35-$50 for up to 10 guests
$1.50-$3.50 for jars if host wishes them to have their bath salt creations in little jars like sand art...  only with bath salts for
use at home during bath time.

Hair Bling & Extension Making: we bring various feathers, string, yarn and a glue gun and teach young ladies how to make their own interesting hair decor.

More Ideas:
Healthy Cooking Classes, Dance Choreographer,  Beauty and Make-Up Class, Yoga or Pilates Class, Belly Dancing Class, Becoming A Young Lady Class (covers menstruation, to shave or not to shave, skin problems, body changes and various other teen issues like internet safety, bullying, how to ask for help and journaling through your teen years.  (curriculum for last class to be chosen by parents for approval before the class is taught, especially if covering older teen issues or any form of sexuality topics).