| abstract |
COMPOSITIONS FOR HAIR DYEING. FIELD OF THE INVENTION. The present invention relates to a composition for dyeing or bleaching hair by oxidation comprising an oxidizing agent, a carbonate lime source, an alkalizing agent and specific dyes, defined herein, used at a pH up to and including 9.5, which accentuates the intensity and application of color, provides excellent coloring and deposition of dyes and optimizes the coverage of gray hair, particularly for dark shades such as brown or black. In addition, the compositions of the present invention have a low odor level and provide a high level of bleaching and lightening equal to that of the ammonia and peroxide systems currently used, while reducing the concentration of peroxide and damage to the hair fiber. |