This no-rinse hair treatment, made with a patented bioactive peptide, promises to reverse damage caused by colouring, heat and styling. Think of it as an apology note to your frazzled, stressed-out hair - one that works by repairing the keratin within each strand. Features:Designed to reconnect keratin chains that have been broken down due to chemical, mechanical and environmental factors.You can expect stronger, softer and more manageable hair as that damage is repaired. If your hair is porous, crunchy, over-processed and generally past its best, you’ll want to know about this mask.Rather than being a temporary fix, it's the first product to utilize biomimetics to reconnect keratin chains.50mlTO USE: Shampoo, don't condition. Towel dry thoroughly. Begin with 1 pump of K18 Mask and add more as needed depending on the length, thickness and condition. Work through evenly into the hair from ends to roots 1 pump at a time. Let sit for 4 minutes to activate then style as usual. Use for the first 4-6 washes, then decrease to every 3-4 washes.