L\'Oréal Professionnel INOA Supreme is specifically designed for grey hair coverage. The ammonia-free permanent hair colour combines natural colour results with volume and multi-tonal reflects to complement the skin tone. INOA Supreme 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. Key benefits: ul.kit li {list-style-type: disc; margin-left: 15px;} Covers up to 100% grey hair Long-lasting, ammonia-free natural-looking permanent colour Multi-tonal reflects complement the skin tone Up to 3 levels for long lasting, glossy colour Development time: 30 minutes