New Plastic sealed in box. Deep-conditioning mask that restores and repairs damaged hair Reverses damage at the molecular level for stronger, healthier hair Provides moisture and smoothness without weighing hair down Perfect for chemically treated, damaged, or brittle hair needing deep repair Description K18 Professional Molecular Repair Hair Mask, Deep Repair and Restorative Hair Mask, 5 oz is a highly concentrated leave-in treatment that reverses hair damage in just four minutes. Powered by K18Peptide, it reconnects broken keratin chains to restore strength, softness, and elasticity. This salon-exclusive formula is ideal for use after chemical services and intense styling. Hair feels noticeably healthier, smoother, and stronger with regular application. Professional-grade repair mask Restores keratin bonds Works in four minutes Strengthens and smooths hair For post-chemical treatments