Happi Staff02.03.20
US Patent No. 10,485,744 B2 (Arno Wahler); L’Oréal has patented a process for treatment of keratinous substances that entails applying a composition that comprises at least one nonionic alkylpolyglucoside surfactant, at least one metal salt and at least one thickening polymer; optionally wiping mechanically, drying, or rinsing the keratinous substances; and applying a second composition that is comprised of at least one ortho-diphenol derivative.