Product Description 4-minute leave-in post-chemical service This restorative, in-salon intensive treatment repairs, strengthens, and improves the elasticity of hair in 4 minutes. Used post-chemical service to repair damage incurred during the service. K18 Professional Mask is a post-service part of our 2-step in-salon service or can be used as a stand-alone treatment for clients. This mask was engineered to repair damage caused during any salon service. With a pH of 5.0-6.0, the leave-in mask helps to close the cuticle and seal in the peptide to reconnect broken keratin chains, with added lightweight conditioning benefits to keep hair smooth and soft. creates hair like new Traveling into the inner-most layers of hair to reach the core polypeptide chains (keratin chains), our revolutionary K18Peptide is just the right size and makeup to fit in and reconnect broken keratin chains. You can feel and see the difference with the first use. KEY BENEFITS: Our K18Peptide is clinically proven to reverse damage in just 4 minutes. Heals damage from bleach, color, chemical services, and heat Restores strength, softness, smoothness, and bounce Doesnt wash away with shampoo, leaving lasting results Vegan, color-safe, cruelty-free 91% original strength* 94% original elasticity* * Results observed in a clinical study while using mist and mask as part of a bleaching treatment. Results may vary depending on hair type, quality and history. HOW TO USE: Shampoo, do not condition. Towel dry thoroughly. Part hair into equal sections. Begin with 1 pump of K18 Mask and add more as needed depending on length, thickness, and condition. Work evenly into hair from ends to roots, one pump at a time. Let sit for 4 minutes to activate. Do NOT rinse out. Style as usual. If cutting, you may start right away. If toning, use K18 Mask then apply toner over K18 Mask. Process as usual. Rinse/shampoo toner, towel-dry thoroughly. Reapply K18 Mask as per instructions above. Style as usual. DO’S & DONT’S: Do use K18 Mask on all hair types Do use after every bleach or color service Do use K18 Mask before and after toning Do wait the full 4 minutes before styling or adding additional products Do add a leave-in conditioner after the 4 minutes if hair feels like it needs moisture Do use a heat protectant if heat styling hair Dont use conditioner before applying K18 Mask Dont use too much (refer to our usage charts for help) DONT rinse it out INGREDIENTS: Water (Aqua) (Eau), Alcohol Denat., Propylene Glycol, Cetearyl Alcohol, Dicaprylyl Ether, Cetyl Esters, Behentrimonium Chloride, Polysorbate 20, sh-Oligopeptide-78 (K18Peptide) , Hydrolyzed Wheat Protein, Hydrolyzed Wheat Starch, Isopropyl Alcohol, Tocopherol, Phenoxyethanol, Potassium Sorbate, Citric Acid, Fragrance (Parfum), Geraniol, Linalool, Hexyl Cinnamal, Benzyl Alcohol.