What it is: A concentrated leave-in formula designed to support the scalp and give you thicker, denser, fuller-looking hair.What it does: Multi-Peptide Serum for Hair Density is a concentrated leave-in formula designed to support the scalp and give you thicker, denser, fuller-looking hair. The formula is lightweight and offers a combination of peptide technologies alongside a series of plant-based extracts. This formula contains REDENSYL™, Procapil™, CAPIXYL™, BAICAPIL™, Ana Gain™, and High-Solubility Caffeine. All trademarks belong to their respective owners. REDENSYL is a trademark of Givaudan, Procapil is a trademark of Sederma Inc., CAPIXYL is a trademark of Lucas Meyer Cosmetics Canada Inc., BAICAPIL is a trademark of Provital, S.A., and Ana Gain is a trademark of Mibelle Biochemistry. Neither DECIEM nor The Ordinary are affiliated with the trademark owners. How to use: Massage a few drops thoroughly into clean, dry scalp once daily, ideally at bedtime. The formula is a leave-in treatment. If irritation occurs, rinse off, cease use and consult a physician. Keep out of reach of children. Use in evening. The serum is good for 12 months after opening. Paraben-free; phthalate-free; sulfate-free; silicone-free; fragrance-free; oil-free Store at room temperature (59ºF to 86ºF) The ingredient list shown may vary from the box of the product depending on time and region of purchase Made in Canada