L'Oréal Professionnel Dia Richesse 5.5 - Mahogany DIA Richesse illuminates natural hair colour through its ammonia free and tone-on-tone colouration process, for rich, deep reflects and exceptionally soft feel. Wondering how to cover grey hair? This is ideal for blending away your first grey hairs leaving it with natural-looking colour. The short development time also makes it perfect for quick hair dye top-up services for those with busy lives. With its innovative conditioning formula, it leaves your hair feeling conditioned, looking glossy and helps to enhance the vibrancy. Not looking for a drastic change? Why not try a clear gloss for a dazzling reflective high shine finish.