K18 Leave-in Molecular Repair Hair Mask

Chrissy’s Tip: “This is one of my must-haves, especially for blondes or anyone with damage. I always recommend using it consistently because it actually helps rebuild the hair—not just coat it. It makes such a difference in how the hair feels and holds over time.” The K18 Leave-In Molecular Repair Hair Mask is a treatment that works on a molecular level to help reverse damage in just 4 minutes. Powered by the K18PEPTIDE™, it’s clinically proven to repair damage from bleach, color, chemical services, and heat—helping restore strength, softness, smoothness, and bounce with both immediate and long-term results. Pro Tip: Apply to clean, damp hair after shampooing. Skip conditioner, use 1–3 pumps depending on length, and let it sit for 4 minutes before styling. Best For: Damaged hair, blonding clients, chemically treated hair, extensions Details: 50 mL