The Ordinary Multi-Peptide Serum for Hair Density is a powerful, concentrated serum designed to improve hair look and feel. Featuring Redensyl, Procapil and Baicapil, it helps to increase blood flow and nourish hair, resulting in thicker, fuller and healthier looking hair. Suitable for all hair types and textures, this gently formulated serum is free of parabens, formaldehyde and phthalates.