A lightweight, fast-absorbing scalp serum clinically proven to visibly reduce hair thinning while promoting thicker, fuller, healthier-looking hair and helping minimize the appearance of grey hair. Living Proof Scalp Care Density Serum is an advanced daily scalp treatment designed for anyone looking to improve the appearance of thinning, shedding, loss of density, and premature greying. The lightweight, non-greasy serum works directly at the scalp to support healthier-looking hair from the root, with clinically proven results in as little as 90 days. Powered by Living Proof's Density Boosting Technology, the formula helps protect hair follicles from damage while delivering essential nutrients, including zinc and plant extracts, to help strengthen and revitalize hair from the root. The result is hair that appears thicker, fuller, and healthier, while supporting the natural hair growth cycle. The formula also features an Anti-Grey Complex, which combines amino acids and antioxidants to help protect melanin pigments from oxidative stress and maintain the appearance of natural hair color. Pea Sprout Extract helps support a balanced hair growth cycle, while Amaranth Peptides help increase the diameter of individual hair fibers for a fuller, thicker appearance. Fast absorbing and easy to incorporate into any routine, the leave-in formula can be applied to a dry or damp scalp every day without leaving hair feeling oily. Key Benefits Clinically proven to visibly reduce hair thinning Promotes thicker, fuller, healthier-looking hair from the root Helps reduce shedding Promotes healthier hair growth Helps increase the appearance of hair density Helps reduce the appearance of grey hair Helps protect melanin pigments from oxidative stress Helps support a balanced hair growth cycle Helps increase the diameter of individual hair fibers for a fuller appearance Lightweight, fast-absorbing formula Won't leave the scalp or hair feeling oily or greasy Can be applied to dry or damp scalp Designed for daily use Color-safe Safe for chemically treated hair Safe for hair extensions Silicone-free PETA-certified cruelty-free