Details: For anyone looking to enhance color vibrancy between salon visits or colorings. With Color boost from Schwarzkopf, you can boost or add new tones to your hair color in a pinch! Just incorporate color boost into your favorite conditioner between full colorings. Add 1-5 color drops to your favorite conditioner to increase color intensity. Color boost has no ammonia, No peroxide, no alcohol, just color and is ideal for all hair types.