Creating fuller and nourished locks, whilst supporting hair and scalp health, The Ordinary Multi-Peptide Serum for Hair Density is a concentrated formula designed to maintain hair health, revealing thicker, denser, more full strands that are healthy and nourished. Harnessing the power of peptide technologies and a series of plant-based extracts, this leave-in formula reveals salon-quality results from the comfort of home, revealing denser, fuller-looking hair that's strong and shiny. The technologies present in this formula to create an ultra-lightweight, emollient base for exceptional penetration, include REDENSYL complex, Procapil peptide complex, CAPIXYL peptide complex, BAICAPIL complex, AnaGain and High-Solubility Caffeine (1% net Caffeine by weight). The total concentration of these technologies in the formula by weight is 21.15% which helps to make hair feel smoother and look shinier once applied. Free from alcohol, silicone, nuts and gluten. This product is also vegan-friendly