Nioxin Age Defense Serum is a lightweight, leave-in scalp treatment designed to revitalize the scalp and target early signs of hair aging, including thinning, dullness, and premature greying. This advanced formula helps maintain hair’s fullness, smoothness, and natural color by supporting scalp health and improving hair density and moisture levels. Infused with Black Oat Peptides, Niacinamide, and Caffeine, it works to support melanin production, helping to delay the appearance of gray hairs while restoring a more youthful look at the root. Clinically tested and dermatologically approved, this silicone-free serum enhances scalp vitality and strengthens hair from the foundation, leaving it looking fuller, smoother, and more vibrant. Safe for color-treated hair, it’s the perfect addition to an anti-aging haircare routine.