Nioxin Night Density Rescue Leave-In Night Serum is proven to help promote hair density by preventing scalp surface oxidation.

Formulated with NIOXYDINE24 formula which gives effective results at promoting fuller and thicker hair.

The leave-in treatment is easy to apply – simply use the pipette to place drops at intervals throughout your hair, then massage in gently, brush through, and simply go to bed. The NIOXYDINE24 based formula goes to work while you rest, and can result, over a three-month period, in the former, thicker looking hair.