Bonacure R-TWO Rescuing Treatment restructures and repairs damaged, over-processed and stressed hair. The double-bonding technology forms new bonds, preventing future damage for strong, healthy-looking hair and prolonging salon results. The silicone-free** formula also detangles and nourishes hair for smooth, silky results. For optimal performance and ultra-shiny hair, try applying the Bonacure R-TWO Restoring Essence Primer before treatment, and Bonacure R-TWO Renewal Sealer Leave-in Conditioner afterwards. Maximum 5 minute development time.