Matrix SoColor Extra Coverage - Grey coverage gets even better. The first hair color powered by CERA-Oil™ Conditioning Complex to restore tresses to their natural appearance.1. Condition - Ceramides2. Smooth + Control - Jojoba oil3. Shine - Soy bean Things To Remember: 1. Determine the natural base level plus percent of grey using the Consultation Center Swatches. Consider the effects of texture, tenacity and porosity.2. Determine the level you wish to achieve.- Lighter or darker?- Same level?- Cover or blend grey?3. Determine the tone desired.Cool, Neutral or Warm. The final hair coloring results will be a combination of the artificial color molecules and the natural underlying pigmentation of the hair4. Determine the percentage (volume) of developer needed. Matrix Cream Developer is formulated to give up to 1 level of lift for every 10 volume of developer used. Developer Volume Lightening Action3% (10V) Up to 1 level6% (20V) Up to 2 levels For ultimate grey coverage, 6% (20V) is recommended for use with Extra Coverage Collection and Dream Age