Vibrant and durable hair colouring compositions comprising non oxidative azo thiosulphate dye molecules

摘要

The present invention relates to consumer improved hair colouring compositions, which provide improved vibrancy and durability of vibrancy, mulitfaceted colour and complete gray coverage both immediately after dyeing and over the wash and dry cycle. In particular the invention relates to hair colouring compositions comprising specified non oxidative azo thiosulphato dyes and their utilization in combination with oxidative coupler and developer dye systems.