Hair thinning and low density need targeted scalp treatment, not just shampoo switches. The Ordinary Multi-Peptide Serum for Hair combines Redensyl™ and Procapil™ to strengthen follicles and promote growth, with Caffeine to stimulate scalp circulation and Hyaluronic Acid for scalp hydration. Applied daily to a clean scalp, it reduces thinning and improves hair fullness over consistent use.