ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,377,036, issued on Aug. 5, was assigned to Northwestern University (Evanston, Ill.).
"Melanin hair dye with thickeners" was invented by Nathan C. Gianneschi (Wilmette, Ill.) and Zofia Elzbieta Siwicka (Evanston, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Included herein are methods and materials for nontoxic, biocompatible, optionally metal-free, tunable, and long-lasting coloration of human hair. More particularly, provided herein are methods, and associated formulations, for efficient formation and deposition of synthetic melanin to human hair, thereby coloration of hair, whereby the hair treatment formulation is viscous enough for treatment o...