Health and Beauty Coloration L'Oréal Professionnel Ammonia-Free Dye Dia Light 50 ml 8 Ammonia-free tone-on-tone color to personalize the color of your hair (the color extends to medium and long lengths) and to obtain perfect reflections with infinite shine. Applicable only if there is 30% white hair for perfect coverage. Exhibithion time: 20 min : Depending on the type of service provided by your professional stylist, the total time may vary.