K18 Biomimetic Hair Science Molecular Repair Hair Mask is an advanced leave-in hair treatment specially formulated to repair damage, restore strength, and improve elasticity, softness, and manageability. This convenient twin pack contains two K18 Molecular Repair Hair Masks, making it ideal for continued hair repair and maintenance. Powered by patented K18PEPTIDE™, a biomimetic peptide designed to reconnect damaged polypeptide chains within the hair structure, it targets damage caused by bleaching, colouring, chemical treatments, and heat styling. The formula contains Hydrolyzed Wheat Protein and Hydrolyzed Wheat Starch to support hair conditioning and improve texture, while conditioning agents soften strands and reduce roughness. Unlike traditional rinse-out hair masks, this innovative leave-in treatment works in just four minutes without requiring rinsing, helping restore hair strength and elasticity while improving smoothness and manageability. Its lightweight formula is suitable for all hair types, including colour-treated, chemically processed, and heat-damaged hair, providing professional-inspired molecular repair without weighing hair down.