The John Frieda Sheer Blonde range is non-color depositing, so it is safe to use on natural or color-treated hair and for use on highlights and lowlights. It is especially formulated to restore a healthy look and feel to distressed blonde hair, and I can assure you that it did that for me! I started using the products shortly after having my color re-done, and my hair was feeling fragile. Using the products has definitely helped the condition, appearance and vibrancy of my hair.