Nexxus Salon Hair Care Emergencee Strengthening Polymeric Reconstructor is unsurpassed in repairing and strengthening hopelessly damaged hair and stopping hair breakage. This exceptional formulation, containing a renewing blend of Proteins, Collagen and Elastin, coats the cuticle to structually reinforce hair and restore integrity. Use once every two weeks to fortify hair that has been damaged by chemical treatments and thermal styling. Each treatment will dramaticlly improve hair health, condition and shine.