#$%^&*AU2008201717B220130711.pdf#####ABSTRACT Present invention relates to a colouring composition for keratin fibres especially for hair, and, especially for brightening hair. Colouring composition of the present invention for keratin fibres especially human hair based on oxidative dye precursors and optionally comprising coupling agents and direct dyes comprises further at least one carbonate at a concentration of 0.75 to 5% by weight, at least one ubiquinone at a concentration of 0.001 to 1%, at least one aminated silicone at a concentration of 0.01 to 1% by weight and at least one chelating agent at a concentration of 0.25 to 5% by weight, all concentrations are calculated to total composition and prior to mixing with a composition comprising oxidizing agent.
