L'Oréal Excellence hair dye black 1

Features: Rich and natural black color, full coverage of gray hair, rich formula with protection and nourishment, long-lasting stability, easy to use at home. How to use: Perform a sensitivity test 48 hours before, mix the dye with the oxygen according to the instructions, distribute the mixture on dry unwashed hair, leave it for 30 to 40 minutes, wash the hair well, and use the attached conditioner.