Palette Deluxe Permanent Hair Colour in Dark Brown (4-0). This permanent hair dye offers long-lasting colour radiance that lasts until your next colouring. The rich Oil-in-Cream formula deeply penetrates each hair fibre for 100% grey coverage. Our unique, specially developed moisture-retention treatment leaves hair feeling silky-smooth, ensuring your hair looks and feels its best with an irresistible shine. It contains up to 93% ingredients of natural origin (including water).