The Ordinary Multi-Peptide Serum for Hair Density, 2 fl oz — Peptide-Powered Lightweight Leave-In

The Ordinary Multi-Peptide Serum for Hair Density is a lightweight leave-in serum formulated with multiple peptide complexes and plant extracts to help hair appear thicker, fuller, and denser over time.

This concentrated 2 fl oz treatment combines several peptide technologies—REDENSYL™, Procapil™, CAPIXYL™, BAICAPIL™, AnaGain™—plus high-solubility caffeine and nourishing botanical extracts to support a healthier-looking scalp environment. The formula is water-light, designed for daily application to the clean, dry scalp, and is free from alcohol, silicones, and animal-derived ingredients.

How does this serum support a denser-looking hairline?

The serum targets the scalp with a blend of peptide actives and plant-based extracts intended to improve the appearance of hair density by supporting the scalp environment where hair grows. It’s applied directly to the scalp so active ingredients sit at the site where they can be absorbed.

• Contains multiple peptide technologies formulated to act on scalp and follicle-related pathways.
• High-solubility caffeine provides a lightweight carrier for delivery.
• Use nightly or daily as directed to maintain consistent exposure.

What are the key ingredients and why are they included?

The serum mixes proprietary peptide complexes with botanical extracts to deliver a combined approach: peptides for targeted activity and plant extracts for nourishment and support. Trademarks like REDENSYL™, Procapil™, and CAPIXYL™ represent distinct peptide or peptide-like technologies developed by their respective creators.

• REDENSYL™, Procapil™, CAPIXYL™, BAICAPIL™, and AnaGain™ are peptide or plant-protein technologies chosen for scalp-focused performance.
• Larix Europaea, Pisum Sativum, and Camellia Sinensis extracts add botanical support and antioxidant-rich benefits.
• High-solubility caffeine helps with formulation texture and scalp delivery.

How do I use it in my daily routine?

Apply a few drops directly to a clean, dry scalp once daily, ideally at bedtime, so the lightweight serum can sit without being washed away. Consistent application is recommended; results that rely on appearance changes typically appear over weeks of regular use.

• Dispense a few drops and part hair to expose the scalp before applying.
• Massage gently to distribute the serum across the scalp surface.
• Do not rinse out; style as usual after application.

Is this product suitable for my hair and lifestyle?

The formula is free from animal-derived ingredients, silicones, gluten, and harsh alcohols, making it compatible with many clean-beauty routines. Its leave-in, lightweight texture fits easily into morning or evening regimens and works with most styling products.

• Vegan, cruelty-free, and formulated without silicones or drying alcohols.
• Light texture that won’t weigh hair down or leave heavy residue.
• Designed to integrate with shampoo, conditioner, and styling steps.

Who is this for: This serum is intended for anyone seeking a targeted, leave-in scalp treatment to help hair appear fuller and denser through daily use. It suits people who prefer lightweight, fragrance-minimal formulas and those who follow vegan and cruelty-free standards. If you want a concentrated peptide-forward product to add to a hair-support routine, this 2 fl oz serum offers an easy daily application designed to sit at the scalp where you need it.

Ingredients

Aqua (Water), Propanediol, Butylene Glycol, Glycerin, Caffeine, Biotinoyl Tripeptide-1, Acetyl Tetrapeptide-3, Larix Europaea Wood Extract, Pisum Sativum Extract, Scutellaria Baicalensis Root Extract, Triticum Vulgare Germ Extract, Glycine Soja Germ Extract, Trifolium Pratense Flower Extract, Camellia Sinensis Leaf Extract, Apigenin, Oleanolic Acid, Arginine, Glycine, Calcium Gluconate, Zinc Chloride, Lactic Acid, Gluconolactone, Dextran, Maltodextrin, Hydroxyethylcellulose, Xanthan Gum, Pentylene Glycol, Dimethyl Isosorbide, Polysorbate 20, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Trisodium Ethylenediamine Disuccinate, Sodium Metabisulfite, Sodium Benzoate, Phenoxyethanol, Chlorphenesin.