Nioxin 3D Intensive Hair Booster - hair cuticle protection treatment for progressed thinning hair. It conditions hair and forms a protective barrier against cuticle damage and protects thinning hair. This Nioxin Treatment is a leave-on professional hair treatment with KeraPro Complex is particularly designed for progressed-thinning hair and works on specific areas of concern, such as a receding hairline or a low-density crown. Nioxin 3D Intensive Hair Booster with Vitamin Complex gives a warming sensation after application. Nioxin is the N°1 Salon Brand for thicker and fuller hair with more than 30 years expertise in thinning hair.