Dr. Stan Greenfield Who is Dr. Greenfield and what are his credentials? Dr. Stan Greenfield has a B.S., M.S. and Ph.D. in organic chemistry and completed the Wharton School of Business Executive management program. He is the author of several publications and inventor of 17 patents. In 1988 Dr. Greenfield developed XT-703 Handshield. This product was developed for men whose work physically abuses their hands, The product was sold initially in hardware stores under the Stanmar Laboratories label. Dr. Greenfield quickly learned that his XT-703 Handshield was readily sought after by women who desired a non greasy, unscented product that worked. At this point Handshield was marketed to independent drug stores throughout the United States. Several additional high quality, unique products were developed. Dr. Greenfield believes that consumers want products that work and not fancy packaging and advertising. Q.A. Laboratories/Stanmar Laboratories is a FDA registered facility and follows FDA good manufacturing practices.