Issue Date: June 9, 2008
IT HAS BEEN a source of frustration for years: Permanent oxidative hair dyes—the most widely used type of hair coloring—are not so permanent. Lush, colorful hair begins to look drab weeks before roots grow out.
Last month, at the New York Society of Cosmetic Chemists' Suppliers' Day Show in Edison, N.J., ingredient supplier International Specialty Products brought the issue to the fore with a new hair-color protection system it calls ColorTrue Technology. The . . .
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