09.09.22
US Patent No. 11,433,012 B2 (Ganesh Chandramowli, Ian Peter Stott, Sreenivasa Thimmaiah); Conopco, Inc., Englewood Cliffs, NJ, has patented a method of increasing the amount of melanin in melanocytes comprising a step of applying a composition containing a compound (shown above) to human skin or human hair. The composition additionally comprises a cosmetically acceptable base, and wherein the cosmetically acceptable base is an emulsion. The melanin is increased by 15 to 40% in the melanocytes.