The Ordinary's Multi-Peptide Serum for Hair Density is a lightweight, concentrated solution for visibly thicker, fuller, and healthier looking hair. Ideal for thinning and volumizing concerns across all hair types, this advanced, emollient formula features Redensyl™ to improve hair density. It's also formulated to be fragrance-free, sulfate-free, mineral oil-free, vegan, and cruelty-free.