L'Oréal Professionnel A perfect hair dye for your client's first time. Dia Richesse illuminates natural hair colour through its ammonia free and tone-on-tone colouration process, for rich, deep reflects and exceptional soft feel. Wondering how to cover grey hair? This is ideal for blending away your first grey hairs leaving it with a 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 the hair feeling conditioned, looking glossy and helps to enhance the vibrancy.