Deliver extreme repair to your hair with GLISS Hair Repair Leave-In Conditioner Ultimate Repair Express Repair. Precisely repair heavily damaged hair with this extra-strength, high-performance formula. Deep reconstruction leaves your hair restored and comb able. Replace lost keratin and strengthen severely weakened hair with three times the liquid keratin of other GLISS hair repair lines. Enjoy hair with more shine that is up to 95% stronger than untreated hair.