Engineered to give a naturally brown look, L'Oreal Professionnel Majirel 4, 0 Deep Brown offers a full range of ultra-brown colouring. This colorant is the ultimate tool for long lasting hair colour, leaving a deep, radiant finish. L’Oreal Professionnel Majirel 4, 0 Deep Brown treats the entire hair fibre thanks to the active treatment; Ionene G and incell. The reinforced and resistant hair enables you to create your desired colour accurately. Please consult instructions, the L’Oreal website or a professional for the best results.