Crazy Color Semi Permanent Hair Dye Color 027 Silver 150ML 5.07 oz Silver Ice cool - create a storm. Crazy Color Silver is a conditioning toner for pre-lightened blonde hair it will neutralise any unwanted pale yellow tones and leave behind a subtle silver shade. Hair must be lightened to a level 9 or 10 before application. Lasts between 3-9 weeks on bleached hair, depending on the shade chosen. Hair color will add energy and shine to natural hair or glowing colors on light bleached hair. The more porous the hair, the more vibrant and longer-lasting the color will be. For exotic, vibrant colors, bleach hair to the light yellow stage and apply crazy color cream without the addition of any other substances.