US Patent Issued to L'OREAL on Sept. 9 for "Composition comprising a particular oxidation dye precursor and a particular carboxylic acid" (French Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,124, issued on Sept. 9, was assigned to L'OREAL (Paris).

"Composition comprising a particular oxidation dye precursor and a particular carboxylic acid" was invented by Laurence Cottard-Mei (Saint-Ouen, France) and Robin Protat (Saint-Ouen, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a composition comprising at least one oxidation dye coupler chosen from 6-hydroxy benzomorpholine of formula (I), hydroxyethyl-3.4-methy lenedioxyaniline of formula (II). 2-amino-5-ethylphenol of formula (III), one of their addition salts, their solvates and/or the solvates of their salts, and at least one compound chosen from N,N-dica...