Known for her Dead Sea salt scrubs, the Israel-born Dorit Baxter paved the way for the bizarre day-spa model. Her glitzy, all-bases-covered midtown salonathriving since 1980aeasily gets away with charging $100 for an hour of, basically, body-oriented entertainment. This tucked-away day spa does nails, waxing, and facials, but is best known for its massages. Massage therapist Karla Khouri is hailed as one of the best relaxers in New York. Want to clench rather than loosen? The Bellyworks program at Dorit hooks you up to a stomach stimulator, rubs green tea on your midsection and wraps your tummy in a muscle-compacting elastic bandage soaked in a aslimming substance.a Hmm. Weall be opting for the massage.