4-minute leave-in treatment to reverse damage. This patented bioactive peptide treatment strengthens and improves elasticity while reversing damage from chemical services, thermal styling, and mechanical styling. For all hair types. K18Peptide™ is the miracle molecule haircare was waiting for. Clinically proven to reverse damage in just 4 minutes. You’ll discover: Like-new hair repaired from the inside out Healed damage from bleach, color, chemical services, heat, and mechanical styling Restored strength, softness, smoothness, and bounce Reduced breakage, split ends, and color fade pH balance of 5.0-6.0 Doesn’t wash away with shampoo, leaving lasting results 91% original strength* 94% original elasticity* Vegan Color Safe Cruelty-Free Dermatologist-Tested