Platform artist Roy Evans hosted the pHormulate Professional Color pHorum at Armstrong McCall’s 2007 World’s Fair of Cosmetic Arts and Sciences, held in San Antonio, Texas. Evans conducted three sessions of the Science Transforming Color and Colorists Transforming Clients program, sharing his perspective on the creativity and chemistry of professional hair color. “Color has not changed, color technology has,” he said. Education included model presentations showcasing pHormulate’s ammonia-free, low inventory color system of 25 intermixable shades. The system is available through Armstrong McCall supply stores; for information, 866-524-7662 or visit