by Mara Shorr, B.S., CAC II-XII and Jay A. Shorr, B.A., MBM-C, CAC I-XII When most skin care professionals first opened their spas, they were probably in one of two situations: everything was shiny, new, and top-of-the-line, or they made due with what they had on a limited budget. Years later, most spas are ready for an upgrade that will make it look modern again,…