Introducing the K-Pak Deep-Penetrating Reconstructor Treatment, a powerful hair cream that visibly repairs damage. Joico’s award-winning formula pairs keratin with an abundance of amino acids to restore a strong, healthy feel to brittle strands. Thanks to guava fruit, hair is shielded against environmental aggressors, while evening promise oil provides lasting nourishment and hydration. Featuring SmartRelease Technology for optimal efficacy, the 5-minute treatment works simultaneously to protect against breakage and future damage.