Joico K-Pak Reconstructor 5.1 oz / 150ml This 5-minute treatment, formulated with an effective blend of amino acids and Joico's smart Keratin technology, rebuilds and strengthens stressed strands to rapidly restore hair to its healthy-looking beauty. KEY BENEFITS Strengthens and rebuilds damaged hair 64% decrease in breakage Instantly healthier-looking hair Improves elasticity and manageability HOW TO USE Apply to damp hair. Leave in at least 5 minutes. Rinse. For a more hydrating slip, follow with K-PAK Hydrator Intense Treatment.