US Patent Issued to L'Oreal on Jan. 27 for "Composition for the simultaneous bleaching and dyeing of keratin fibres and process using this composition" (French Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,533,303, issued on Jan. 27, was assigned to L'Oreal (Paris).

"Composition for the simultaneous bleaching and dyeing of keratin fibres and process using this composition" was invented by Stephane Blais (Aulnay-sous-Bois, France), Stephane Sabelle (Aulnay-sous-Bois, France) and Rahma Benni (Aulnay-sous-Bois, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a composition for the simultaneous bleaching and dyeing of keratin fibres, comprising at least one chemical oxidizing agent, at least one (bi)carbonate, at least one silicate and at least one oxidation dye, and also to a process for the simultaneous bleaching and dy...