Advanced split end therapy - rehab is a heat activated hair treatment that protects the integrity of your hair by sealing hair cuticles for up to ten washes* for sleeker, smoother, shinier results, 10/10 agree.** ghd heat protection system Combines protecting polymers conditioning agents to prevent cuticles lifting for sleek, smooth hair. Seals split ends for up to 10 washes* Smooths and seals split ends to deliver a healthy, smooth finish for up to 10 washes.* Activated by heat Treat your hair with advanced split end therapy then activate with heat from your platinum+ styler or helios professional hair dryer. Nourished and stronger hair Leaves hair feeling nourished and stronger