American Crew recommends American Crew 15 volume Developer in order to produce optimal results for gray blending.

INGREDIENTS
Aqua (Water) (Eau), Hydrogen Peroxide, Cetearyl Alcohol, Amondimethicone, Cetrimonium Chloride, Trideceth-12, Cetyl Alcohol, Ceteareth-60, Ceteareth-23, Pentasodium Pentelate, Methylparaben, Phosphoric Acid, Sodium Stannate.

USAGE
Mix the developer in a 1:1 ratio with the chosen Precision Blend Shade in a color bowl. In general, about 20 mL/0.68oz of color will be needed to complete the service on a client with hair that is 1 inch long. Follow other instructions on bottle.

WARNING
For external use only. Keep out of reach of children. Do not ingest. Do not get in eyes. If contact occurs, rinse eyes thoroughly with water.