Hair care Dyes L'Oreal Professionnel Inoa Hair Coloring 4,51 Discover our colour innovation! Our first permanent hair colour without ammonia is enriched with oils and delivers the colour to the heart of the hair. What’s left is beautiful colour that’s bright and looks natural. Plus, INOA leaves hair feeling conditioned with sublime colour radiance until your next colour appointment. Experience our ultimate in luxury colour, with improved comfort during the development time and no odour. So you can sit back and enjoy the salon! Greys? No problem! INOA gives you high coverage, up to 100%, whilst still keeping the colour looking bright and luminous. With a full range of colours, ask your hairdresser which INOA shade, or cocktail of shades, is perfect for you.