Check my closet for hundreds of beauty items and accept all reasonable offers and bundles! 💜 You’ve found a hidden gem. See photos for the warnings about the box vs no box. This bottle is 100% genuine and unused, sourced directly as manufacturer overstock. This is why it does NOT include the outer box, which is why you’re getting such a great deal. Key Features Brand: K18 Biomimetic Hairscience Size: 50 ml / 1.7 fl oz (Full Size) Treatment: Patented K18PEPTIDE™ technology reverses damage at the molecular level. Efficiency: Works in 4 minutes with no rinsing required. Compatibility: Safe for all hair types and textures. Ethics: Vegan, cruelty-free, and color-safe. Styles: Clean Girl Aesthetic, Salon Professional, Luxury Self-Care, Minimalist Beauty. Product Overview Experience a molecular breakthrough with the K18 Leave-In Molecular Repair Hair Mask. This isn't just a temporary fix; it is a bioactive peptide treatment that mimics the natural structure of hair to reconnect broken keratin chains. Whether you are dealing with damage from bleach, color, chemical services, or high heat, this concentrated formula works in just 4 minutes to restore strength, softness, and bounce.