K18 Repair Hair Mask Treatment Is A High-Quality Hair Care Product That Is Designed To Repair Even The Most Extreme Hair Damage. This 4-Minute Leave-In Treatment Is Infused With K18Peptide, A Patented Ingredient That Works On A Molecular Level To Reverse Hair Damage And Restore It To Its Most Youthful And Healthy State. This Hair Mask Treatment Is Perfect For Those Who Have Experienced Damage From Bleach, Color, Heat, And Chemical Services. With Regular Use, K18 Repair Hair Mask Treatment Will Leave Your Hair Soft, Strong, And Healthy-Looking.