Joico Color Endure Collectionis like getting full coverageinsurance on your hair color...and more. This sulfate-free collection keeps color vibrant and pure. Formulated with a special triple-threat Multi-spectrum Defense Complex. This formula is made with a secret complex of fade-defying Green Tea, antioxidants and UV protectors.The violet series of shampoo and conditioner maintains the perfect hue of blond, highlighted and gray hair tones. Keep at bay the unwanted yellow or brassy tones that lighter sahdes of color can turn into. So cancel the yellow, and brighten your light colored hair while enjoying the added strength and protection to your your hair.