Casting Crème Gloss is perfect for you when you want to emphasize the natural hair color with nuances and give it a new shine. A more durable light color that lasts 6-8 weeks. Gives shine to natural hair color. Natural shine and visible nuances. Caring, completely without ammonia. Lightens undyed hair by 1 degree. Covers grays up to 70%. More durable light color that lasts 6-8 weeks.