Hair Loss/ThinningScalp Treatment
Multi-Peptide Serum for Hair Density — Reddit Reviews
by The Ordinary
Updated November 10, 2026
Caffeine-peptide scalp serum for baby hairs and reduced shedding; greases roots.
What the community says
A lightweight leave-in scalp serum pairing Caffeine with Biotinoyl Tripeptide-1 for density, especially for fine-haired users noticing shedding or sparse hairline areas. It can soothe a dry scalp, though several users report greasy roots, flattening, or no visible change after weeks.
What this means for you
What people love
- Low-cost density serum — roughly 40 cents daily
- Community reports baby hairs and reduced shedding
- Can soothe a dry, uncomfortable scalp
Watch out for
Product details
Where to buy
Full ingredient list · 36
The Ordinary Multi-Peptide Serum for Hair Density 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
Listed in label order, highest concentration first. Linked ingredients have their own page.
Real Reddit threads — 27 mentions across 20 threads
The Ordinary Multi-Peptide Serum for Hair Density on Reddit, in one place — 20 threads from r/finehair, r/Naturalhair and 3 more, summarized.
“i've used the ordinary serum for a few years now and i like it! i've noticed more growth along my hairline, and i shed way less while using it.”
Positive
“I feel like using it I have less hair fall.”
Positive
“Specifically made my hair greasy easily and I didn't notice growth or thickness difference.”
Positive
“I've also used the ordinary hair serum and it seems to at least create babyhairs.”
Positive
“I wash my hair once a week and top it off with The Ordinary hair serum.”
Positive
“i also use the ordinary hair serum a couple days a week”
Positive
“if nothing else it soothes my dry scalp which surely helps growth?”
Positive
“In the meantime i’m trying the ordinary hair serum for added help”
Mentioned
“The keratase genesis serum with ordinary's hair serum has worked wonders for me.”
Positive
