Multi-Peptide Serum for Hair Density
The Ordinary Multi-Peptide Serum for Hair Density is a misc. Our analysis of its 36 ingredients (27 low-risk) rates it Excellent (95/100). Based on its ingredients, it looks well-suited to oily / acne-prone skin.
The Ordinary Multi-Peptide Serum for Hair Density is a misc. Our analysis of its 36 ingredients (27 low-risk) rates it Excellent (95/100). Based on its ingredients, it looks well-suited to oily / acne-prone skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Water
(Solvent) |
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Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent) |
Good for Dry Skin
Fungal Acne Trigger
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Caffeine
(Fragrance, Skin Conditioning, Masking) |
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Biotinoyl Tripeptide-1
(Hair Conditioning) |
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Acetyl Tetrapeptide-3
(Skin Protecting) |
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Larix Europaea Wood Extract
(Humectant, Skin Conditioning) |
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Pisum Sativum Extract
(Skin Conditioning, Skin Protecting) |
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Scutellaria Baicalensis Root Extract
(Astringent, Humectant, Soothing) |
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Triticum Vulgare Germ Extract
(Skin Conditioning, Skin Protecting) |
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Glycine Soja Germ Extract
(Skin Conditioning Miscellaneous) |
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Trifolium Pratense Flower Extract
(Astringent, Fragrance) |
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Camellia Sinensis Leaf Extract
(Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Oral Care Agent, Skin Conditioning, Skin Protecting, Tonic, Uv Absorber) |
Good for Oily Skin
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Apigenin
(Antioxidant, Hair Conditioning) |
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Oleanolic Acid
(Skin Conditioning) |
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Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Glycine
(Buffering Agent, Fragrance, Hair Conditioning, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Skin Conditioning) |
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Calcium Gluconate
(Skin Conditioning, Humectant, Oral Care Agent) |
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Zinc Chloride
(Cosmetic Astringent, Cosmetic Biocide, Drug Astringent Oral Health Care Drugs, Oralcare Agent, Oral Health Care Drug, Oral Care Agent, Soothing) |
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Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent) |
Bad for Sensitive Skin
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Gluconolactone
(Fragrance, Humectant, Solvent) |
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Dextran
(Binding Agent, Bulking Agent, Binding, Viscosity Controlling) |
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Maltodextrin
(Absorbent, Binding Agent, Emulsion Stabilising, Film Forming, Hair Conditioning, Skin Conditioning, Suspending Agent Nonsurfactant, Binding) |
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Hydroxyethylcellulose
(Binding Agent, Emulsion Stabilising, Film Forming, Viscosity Increasing Agent, Binding, Stabilising, Viscosity Controlling) |
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Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling) |
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Pentylene Glycol
(Skin Conditioning, Solvent) |
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Dimethyl Isosorbide
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
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Polysorbate 20
(Emulsifying, Surfactant) |
Fungal Acne Trigger
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PPG-26-Buteth-26
(Fragrance, Hair Conditioning, Skin Conditioning, Emulsifying, Surfactant) |
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PEG-40 Hydrogenated Castor Oil
(Fragrance, Emulsifying, Surfactant, Perfuming) |
Fungal Acne Trigger
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Trisodium Ethylenediamine Disuccinate
(Chelating Agent) |
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Sodium Metabisulfite
(Antioxidant, Preservative, Reducing) |
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Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking) |
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
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Chlorphenesin
(Cosmetic Biocide, Antimicrobial, Preservative) |
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
The concentrations these actives are typically effective at in research — not a measurement of this product.
OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.
Lactic Acid
INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.
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