Used by professionals. With Fade Block Technology. Retain your color up to 5x longer! (When using ColorTHRIVE shampoo, conditioner and color lock in spray vs ordinary shampoo and conditioner [color loss due to hair washing]). Breakthrough technology helps block hair color from fading (after 15 washes)! Easy spray pump. Introducing TRESemme ColorTHRIVE with Fade Block Technology: An exciting new system that helps block your color from fading, allowing you to retain your color up to 5 times longer! Professional Formula: Convenient, easy spray locks in your color daily, keeping your unique hair color bright and vibrant. Professional. Affordable. TRESemme. This product is not tested on animals.