08.01.14
US Patent No. 8,758,450 B2; L’Oreal, Paris has patented a method for the lightening and/or lightening dyeing of keratin materials, comprising treating said keratin fibers with: at least one direct emulsion (A) comprising at least one fatty substance free of carboxylic acid groups, at least one surfactant, water and at least one oxidizing agent; and at least one direct emulsion (B) comprising at least one fatty substance free of carboxylic acid groups, at least one surfactant, water and at least one alkaline agent. The concentration of the fatty substances free of carboxylic acid groups is equal to about 25% by weight or more of the total weight of the composition obtained after mixing direct emulsions (A) and (B).