K18 Leave-In Molecular Repair Hair Mask (1.7?oz) is a breakthrough, salon-grade, ultra-lightweight leave-in treatment powered by the patented K18PEPTIDE that penetrates deeply to reconnect broken polypeptide chains and disulfide bonds in just four minutesvirtually reversing damage from bleach, color, heat, and chemical services to restore strength, elasticity, softness, smoothness, and bounce; this vegan, cruelty-free, color-safe, pH-optimized (5.06.0) cream works on all hair types with immediate and progressive results and requires no rinse; usage directions: shampoo only (skip conditioner), towel-dry hair, apply 13 pumps (depending on length/density) from ends to roots, leave for 4?minutes, comb through and style as usual; key benefits: Repairs hair at the molecular level in just 4?minutes Restores strength, elasticity, smoothness, softness, and bounce Lightweight, non-greasy leave-in formula Vegan, color-safe, cruelty-free, and pH-balanced Delivers immediate and lasting results across all hair types Powered by the patented K18Peptide, this leave?in mask penetrates the innermost layers of hair to reconnect broken polypeptide chains and disulfide bondsdelivering authentic, molecular-level repair in just four minutes, not merely surface-level smoothing or coating. Effective from the first use, the formula progressively restores hairs core integrityimproving elasticity, strength, softness, and bounceand the benefits endure through shampoos and styling, unlike rinse-out treatments whose effects quickly fade. Designed for convenience, the non-greasy cream is applied to towel-dried hairwithout rinsingabsorbing quickly without adding residue or heaviness, making it ideal for all hair types including fine, wavy, or color-treated strands. With a balanced pH in the 5.06.0 range, the mask helps minimize cuticle swelling and promotes hair proteins being in their most resilient statethus enhancing durability and supporting long?lasting repair. Crafted to be clean and accessible, this mask is vegan, free from harsh animal by-products, safe for color-treated hair, and effective across all hair types and texturesmaking it a professional-grade yet inclusive haircare staple.