All-Nutrient Hair Color is one of the most amazing Hair Color I have ever tried. At a time when most products seem to to give you less "meat" and more "other stuff" resulting in the need of NN series to cover, this Color is fully loaded with the most intense punch I have ever seen. Even the REDS... I just had an appointment come in after 3 months of me using a level 8 RS red scarlet, and it looked like it never faded...Now I know all things fade, but the RED..... Anyway, the coverage of gray is across the board here, I add N to the other tones to mute the intensity, and it comes out great! The shine and depth is like going from an old picture to HD High definition of color! Just watch your formulas, you don't have to add all the different mixtures of tones, just fo to for the color you want to see. No need to pre-soften or pre-pigment, these tones carry a punch! Not only the price is awsome, but the base for the color is an intensive reconstructor that by the time the color process is done, the hair is reconditioned. No need to even use a shampoo either! Just emolsify! Add a little water, ans swish it around for a couple of minutes, I finished with their Colorsafe Conditioner, even the stains rubbed right out of the skin... This color brought me so much fun to the hair coloring sessions I trully feel everyday like the Michelangelo of Hair Color, Cant wait to go paint some more....