The Ordinary Multi-Peptide Serum for Hair Density is a product designed to support the scalp and promote thicker, fuller-looking hair. It contains a variety of ingredients, including water, propanediol, butylene glycol, glycerin, caffeine, and various plant extracts and peptides. Some of the key ingredients in the serum include REDENSYL™, Procapil™, CAPIXYL™, BAICAPIL™, and AnaGain™, which are all trademarked blends known for their hair density benefits. The product is free from parabens, sulfates, mineral oil, and other harsh chemicals. Users are advised to apply a few drops to the scalp once daily, ideally at bedtime, and to massage it in thoroughly. The formula is a leave-in treatment and should not be washed out. If irritation occurs, users should rinse off the product, cease use, and consult a physician