I went to the Suddenly Slimmer Spa in Phoenix 1-2 times a month for a few months before I got married. I always enjoyed my facials there but my wallet did not. I usually get my haircut at the Toni and Guy schools so I thought I'd google student day spa's and I came across SWINA.
After my first visit I was immediately impressed with how professional the students were, and the quality of their products. They use Rhonda Allison (just like the Suddenly Slimmer Spa) and Hylunia which is great for sensitive skin like mine. I've gotten quite a few different facials. I like the moisturizing ones the best, and the pumpkin one smells divine although it's a little too harsh for my skin. The ladies at the front desk are always warm and friendly.
The facial is typical compared to any day spa. Cleanse, 2 masks, massage. The only difference besides the cost is that instead of being in your own room you are separated by curtains in a big open area. Usually it's not a problem because music is playing and everyone talks softly except for the occasional woman that has to blab her entire life story loudly to the student, disrupting all of the other clients around her trying to get a relaxing facial.
The facials run $30/hour, and for awhile they were running a 5 facials for $75 deal which was AWESOME! I went every 2-3 weeks for almost a year and hope to be going back soon.