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Apply a small amount of the product onto a clean area of skin on the upper forearm.
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Keep the area dry.
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If the product has a specified duration of use, rinse off after this time has elapsed. Otherwise rinse off after 24 hours.
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If any redness, burning, itching, blistering or irritation is observed at any time throughout the test, do not use the product.
Step 2: Treat
The Ordinary Multi-Peptide Serum for Hair DensityMulti-Peptide Serum for Hair Density
Step 2: Treat
The Ordinary Multi-Peptide Serum for Hair DensityMulti-Peptide Serum for Hair Density
Targets Hair
Suited to All Hair Types
Format Serum: Water-Based
Overview
Discover if this product is right for you:
Product Details
Highlights
- ph
- 4.80 - 5.80
- water-free
- No
- alcohol-free
- Yes
- oil-free
- No
- silicone-free
- Yes
- vegan
- Yes
- gluten-free
- Yes
- cruelty-free
- Yes
Awards & Features
Multi-Peptide Serum for Hair Density is a concentrated leave-in formula designed to support the scalp. It helps 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™, AnaGain™, 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 AnaGain™ is a trademark of Mibelle Biochemistry. Neither DECIEM nor The Ordinary is affiliated with the trademark owners.
How to Use
How to Use
- Massage a few drops thoroughly into clean, dry scalp once daily, ideally at bedtime.
- This formula is a leave-in treatment.
- Do not wash hair or scalp after application.
- If irritation occurs, rinse off, cease use, and consult a physician.
- Use only as directed on unbroken skin.
- Patch testing prior to use is advised.
- Keep out of reach of children.
Product & Safety Guidance

Recycling Instructions
Before Recycling:
Empty the contents of the container. Remove cap, lid, dropper, pump, and other components and rinse the bottle/jar with water.
Packaging items with adhesive-based labels:
Contact your local recycling facility to ensure
recyclability via curbside recycling program.
Otherwise, dispose via our in-store recycling program.
Serum/Oil, Shampoo, Conditioner, Shower Gel, Lotion, Hand Soap Bottles:
#1 PETE & #2 HDPE and glass bottles are recyclable
through the majority of local curbside recycling programs.
# 5 PP bottles are usually recyclable through local
curbside recycling programs. Please contact your local recycling facility to
ensure recyclability.
Otherwise, dispose via our in-store recycling program.
Dropper Lids:
Dispose of via our in-store recycling program.
Disclaimer:
We work to provide our customers with accurate guidelines on packaging recyclability; however, please ensure your city or municipal program is consulted before recycling an item.
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Formulation Compatibility Tool
See if this product is compatible with other formulations from The Ordinary.