Nioxin 3D Intensive Hair Booster 100mLHair Booster conditions hair and forms a protective barrier against cuticle damage. Hair Booster is particularly designed for progressed thinning hair and works on specific areas of concern, such as a receding hairline or a low density crown. It boosts thinning hair protection . Features & Benefits: Leave on cuticle protection professional treatment for hair with progressed thinning Conditions hair and forms a protective barrier against cuticle damage