NIOXIN ANTI-HAIR LOSS SERUM. Leave-on hair treatment that thickens the hair from the 1st use & reduces hair loss in 8 weeks thanks to enhanced hair anchorage & therefore thickening your hair. The formula, clinically proven to thicken the hair, increase hair anchorage & reduce hair loss, combines Caffeine, Lauric Acid, Niacinamide & Sandalore. Sandalore is a trademark of Givaudan