Joico K-Pak Deep-Penetrating Reconstructor is designed for repairing damage done to hair overtime. Extremely hydrating treatment for overly dry, damaged hair. This treatment contains the highest amount of Quadra mine Complex than any other product in the Joico family. Hair is left shiny, strong and in a healthy, manageable state. K-PAK Reconstructor results in an immediately noticeable difference in strength, texture and appearance. Penetrates deeply to seal the cuticle and re-structures hair with exclusive keratin silicone complex.