Multi-Peptide Serum for Hair Density
A lightweight leave-in scalp serum designed to support fuller, denser-looking hair.
A scalp-focused peptide serum for people who want a denser-looking hair routine without oily residue. Results require months of consistent use — this is a long game, not a quick fix.
Peptide-rich scalp serum at a fraction of the price of premium hair density brands like Kérastase or Nutrafol. People are drawn to the caffeine + multi-peptide technology combination for a targeted, scalp-first approach.
Applied to a clean, dry scalp once daily — ideally at night before bed. Massage gently and leave in without rinsing.
People who want a scalp-level approach to fuller-looking hair and are willing to commit to a daily routine for several months.
If you expect fast results. This is a consistency play. Users who quit after 4 weeks are unlikely to see any meaningful change.
This is a scalp product, not a skincare product. But those with a sensitive scalp should patch test given the high concentration of plant extracts in the formula.
- Scalp massages after application (improves circulation and absorption)
- A gentle sulfate-free shampoo
- Consistent daily application — this is the most important pairing of all
Best For
- Thinning-looking hair
- Scalp-focused routines
- Fuller-looking hair goals
- Daily scalp serum users
How to Use
Apply a few drops to a clean dry scalp once daily, ideally at night, and massage in gently. Do not rinse.
Key Ingredients
Constricts blood vessels (reduces puffiness and dark circles), provides antioxidant protection, and stimulates scalp circulation when used in scalp serums.
Supports the extracellular matrix surrounding hair follicles, aiming to improve the environment that keeps hair anchored and in an active growth phase.
Supports the anchoring environment of hair follicles and works synergistically with other scalp peptides to promote a healthier follicle matrix.
Inhibits 5-alpha reductase activity — an enzyme linked to DHT-related hair thinning cycles. Also has antioxidant and anti-inflammatory properties.
Ingredients to Note
May be a concern for some skin types. Tap to learn more.
Full Ingredient List
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
About This Product
The Ordinary Multi-Peptide Serum for Hair Density combines peptide technologies (biotinoyl tripeptide-1, acetyl tetrapeptide-3), plant extracts (larix europaea, pisum sativum, scutellaria baicalensis, trifolium pratense), caffeine for scalp circulation, and enzyme-inhibiting actives (apigenin, oleanolic acid) in a comprehensive leave-in scalp treatment. The formula is designed to be applied to the scalp daily, targeting the follicle environment with a multi-pronged approach. Results are gradual and depend entirely on consistency.