The most advanced technology in hair health. I think K18's revolutionary factor is its efficiency. Skip the extra 10 minutes in the shower; hell, skip the conditioner altogether! Apply this cream treatment to your towel-dried hair and enjoy a weightless, healthy new style. The more you use it, the healthier your hair will get. This is one of the only repairing treatments you leave in and saves you time instead of adding it to your hair routine. K18 is similar to other bond-building products like Olaplex and B3 but has surpassed them in patented technology. The repairing agent penetrates the deepest cortex of the hair and repairs from the inside out. Other bond builders repair the splitting hair on the outer cortex, but until K18, nothing could repair the hair's core. Once repaired at the deepest level, your hair will feel like its original healthy form. This product is almost invisible in the hair, which makes it phenomenal for fine or thin hair. I also love using this product on my extensions to keep the ends from thinning. I pair K8 with Redavid Orchid Oil or Caviar Repair Spray to get the perfect combination of protein-based repair and deep hydration.