Recharge the effects of the Pro Fiber in-salon treatment yourself at-home by substituting your chosen Pro Fiber mask or conditioner every 4th wash with this Re-charge Booster and extend the salon effect for up to 6 weeks. Apply to shampooed lengths and ends and massage into the hair fibre, leave for 5 minutes before thoroughly rinsing it out. Your hair will look soft, freshly-cut and intensively shiny.