ALEXANDRIA, Va., May 12 -- United States Patent no. 12,622,858, issued on May 12, was assigned to Living Proof Inc. (Boston).
"Additives for coloring agents and methods of use thereof" was invented by Soo-Young Kang (Boston), Zhaoxia Ji (Boston), Dinara A. Villanueva (Boston) and Nawodi Abeyrathna (Boston).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are methods for coloring hair, comprising applying a mixture comprising one or more hair dyes and an additive as a pre-treatment, as a simultaneous treatment, as a post-treatment, or a combination thereof."
The patent was filed on June 26, 2020, under Application No. 17/622,453.
*For further information, including images, charts and tables, please v...