WHAT IT IS American Crew Gray Shampoo contains balancing properties to remove brassy yellow tones from gray or graying hair. WHAT IT DOES Keep your gray looking it’s finest. CI 60730 (Ext. Violet 2), found in American Crew Gray Shampoo, works to minimize yellow tones that gray hair can get due to minerals in the water, impurities in the air and product buildup. Helps to minimize yellow tones in hair. Smooths and softens, helps absorb and retain moisture. Adds sheen and conditions to the hair. Natural resin. It also helps prevent brassiness in hair that has been bleached or dyed blonde. Hydrolyzed Milk Protein provides ultimate conditioning.