K18 Leave-In Molecular Repair Hair Mask-50MLSay goodbye to damaged hair and hello to your healthiest, most vibrant strands yet with the K18 Biomimetic Hairscience Leave In Molecular Repair Hair Mask. This cutting edge treatment uses revolutionary bioengineering technology to repair and restore hair from the inside out, working on a molecular level to reverse damage caused by heat, color, and chemical treatments. Key Benefits: Molecular Repair: Penetrates deep into the hair cortex to repair