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. Smoothes and softens, helps absorb and retain moisture. Adds sheen and conditions to the hair. Natural resin.