Nioxin, the #1 Professional brand for thicker, fuller hair, pioneers a hair movement focused on the belief that everyone deserves to experience the uplift that comes from having hair that looks and feels the way they want it to: Thicker. Fuller. Healthier. Built on a legacy of clinically proven solutions, Nioxin turns scalp science into true scalp care and hair thickening products with proven results. Nioxin Grows Results™. This Hair Booster Serum creates a barrier for hair cuticles, protecting them against any damage and preserves the diameter of hair strands, making the hair look thicker. Formulated specifically for progressed thinning hair, Nioxin Intensive Hair Booster provides a targeted solution for areas of concern like receding hairlines or thinning crown. With its convenient leave-in formula, Nioxin Hair Booster Serum can be seamlessly integrated into your daily hair care routine. Simply apply to the roots and leave in, without the need for rinsing. Scientifically Proven Results: Backed by years of research and development, Nioxin Hair Booster Serum has been scientifically tested to improve the appearance of thinning hair, delivering visible results and a noticeable difference. CAUTION: Do not get into the eyes. Keep out of reach of children. For any questions or concerns about side effects, always consult a medical professional.