Nioxin Hair Fall Defense Serum is a leave-on thinning hair treatment. 

Designed for daily use, it's clinically proven to increase hair anchorage with visible results in only 8 weeks while thickening hair from the very first use.

• Reduced hair fall: 93% of users noticed less hair in their brush.
• Better hair resistance: 91% of users noticed improved hair anchorage.
• Thicker, fuller hair: 93% of users felt they had stronger hair when using our leave-on thinning hair treatment.
• Healthier hair and improved hair density: 90% of users noticed a reduction in hair breakage.
• Innovative active ingredients: a combination of Sandalore™, caffeine, lauric acid, and niacinamide creates the ultimate hair serum.