NIOXIN Anti-Hair Loss Serum with Sandalore is a light transparent leave-on hair treatment that is clinically proven to thicken hair from the 1st use and reduces hair loss in 8 weeks thanks to improved hair anchorage. The dermatologically tested formula combines Caffeine, Lauric Acid, Niacinamide and Sandalore™ and for the best results should be used as part of a complete Day & Night Regime with the 3-Part Systems and Night Density Rescue. Directions for use: Apply 12 to 15 pumps of Anti-Hair Loss Serum to the scalp. Use on dry or damp hair and massage to distribute evenly. Do not rinse. Anti-Hair Loss Serum can also be used with Nioxin 3 Step System Kits, or Night Density Rescue for a complete day and night routine.