The Ordinary Multi-Peptide Serum for Hair Density - 2 fl oz - Ulta Beauty: Thickening, All Hair Types, Daily Use, Unscented

Common questions

Is The Ordinary Multi-Peptide Serum for Hair Density - 2 fl oz - Ulta Beauty: Thickening, All Hair Types, Daily Use, Unscented healthy?

The Ordinary Multi-Peptide Serum for Hair Density - 2 fl oz - Ulta Beauty: Thickening, All Hair Types, Daily Use, Unscented scores 75/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. This hair serum contains several beneficial ingredients such as peptides, caffeine, and plant extracts that support hair health and density.

How processed is The Ordinary Multi-Peptide Serum for Hair Density - 2 fl oz - Ulta Beauty: Thickening, All Hair Types, Daily Use, Unscented?

The Ordinary Multi-Peptide Serum for Hair Density - 2 fl oz - Ulta Beauty: Thickening, All Hair Types, Daily Use, Unscented is NOVA Group 3: Processed Foods.

Which ingredients drive The Ordinary Multi-Peptide Serum for Hair Density - 2 fl oz - Ulta Beauty: Thickening, All Hair Types, Daily Use, Unscented's score?

In Scout's ingredient-by-ingredient analysis, Glycerin, Biotinoyl Tripeptide-1, Acetyl Tetrapeptide-3 count in its favor; Sodium Metabisulfite, Sodium Benzoate, Phenoxyethanol are flagged as ingredients of concern. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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The Ordinary Multi-Peptide Serum for Hair Density - 2 fl oz - Ulta Beauty: Thickening, All Hair Types, Daily Use, Unscented

75 Good

Analysis updated August 2026 · How Scout scores

$24.00 · 2 oz · $12.00 / ounce
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At a glance

Beneficial ingredients 15
Harmful ingredients 3
Category Shampoo
Summary

This hair serum contains several beneficial ingredients such as peptides, caffeine, and plant extracts that support hair health and density. However, it also includes sodium metabisulfite and phenoxyethanol, which are potential irritants and can cause allergic reactions in sensitive individuals. The presence of these preservatives, along with the processed nature of the product, impacts its overall rating.

Key ingredients 36

Glycerin
Good

Glycerin is a well-known humectant that attracts moisture to the skin. It helps maintain hydration and improves the skin's barrier function. It is considered safe and beneficial in cosmetic formulations.

Risks

Generally safe with minimal risk of irritation.

Benefits

Enhances skin hydration and supports barrier function.

See more about Glycerin →
Biotinoyl Tripeptide-1
Good

Biotinoyl Tripeptide-1 is a peptide that supports hair health and growth. It is believed to strengthen hair and improve its density. It is considered beneficial for hair care products.

Benefits

Supports hair strength and density.

Acetyl Tetrapeptide-3
Good

Acetyl Tetrapeptide-3 is a peptide that promotes hair growth and reduces hair loss. It is used in hair care products to improve hair density and health. It is considered safe and effective.

Benefits

Promotes hair growth and reduces hair loss.

Larix Europaea Wood Extract
Good

Larix Europaea Wood Extract is derived from the larch tree and is known for its antioxidant properties. It helps protect the hair and scalp from environmental damage. It is considered beneficial in hair care formulations.

Benefits

Provides antioxidant protection and supports scalp health.

Pisum Sativum Extract
Good

Pisum Sativum Extract, or pea extract, is rich in proteins and nutrients that support hair health. It helps strengthen hair and improve its resilience. It is considered a beneficial ingredient in hair care products.

Benefits

Strengthens hair and improves resilience.

Scutellaria Baicalensis Root Extract
Good

Scutellaria Baicalensis Root Extract is known for its anti-inflammatory and antioxidant properties. It helps soothe the scalp and protect hair from damage. It is considered beneficial in hair care formulations.

Benefits

Soothes the scalp and provides antioxidant protection.

Triticum Vulgare Germ Extract
Good

Triticum Vulgare Germ Extract, or wheat germ extract, is rich in vitamins and minerals that nourish the hair. It helps improve hair strength and elasticity. It is considered beneficial in hair care products.

Benefits

Nourishes hair and improves strength and elasticity.

Glycine Soja Germ Extract
Good

Glycine Soja Germ Extract, or soybean germ extract, is rich in proteins and nutrients that support hair health. It helps strengthen hair and improve its resilience. It is considered beneficial in hair care products.

Benefits

Strengthens hair and improves resilience.

Trifolium Pratense Flower Extract
Good

Trifolium Pratense Flower Extract, or red clover extract, is known for its antioxidant and anti-inflammatory properties. It helps soothe the scalp and protect hair from damage. It is considered beneficial in hair care formulations.

Benefits

Soothes the scalp and provides antioxidant protection.

Camellia Sinensis Leaf Extract
Good

Camellia Sinensis Leaf Extract, or green tea extract, is rich in antioxidants that protect the hair and scalp from environmental damage. It helps improve hair health and shine. It is considered beneficial in hair care products.

Benefits

Provides antioxidant protection and improves hair shine.

See more about Camellia Sinensis Leaf Extract →
Apigenin
Good

Apigenin is a flavonoid with antioxidant and anti-inflammatory properties. It helps protect the hair and scalp from damage and soothes irritation. It is considered beneficial in hair care formulations.

Benefits

Protects hair and scalp from damage and soothes irritation.

Oleanolic Acid
Good

Oleanolic Acid is known for its anti-inflammatory and antioxidant properties. It helps protect the hair and scalp from damage and supports hair health. It is considered beneficial in hair care products.

Benefits

Protects hair and scalp from damage and supports hair health.

Arginine
Good

Arginine is an amino acid that supports hair growth and strength. It helps improve blood circulation to the scalp and nourishes hair follicles. It is considered beneficial in hair care formulations.

Benefits

Supports hair growth and improves blood circulation to the scalp.

See more about Arginine →
Glycine
Good

Beneficial ingredient — whole-food or functional value in this product class.

Benefits

Improves hair texture and feel.

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Gluconolactone
Good

Beneficial ingredient — whole-food or functional value in this product class.

Risks

May cause mild irritation in sensitive skin types.

Benefits

Exfoliates and improves skin hydration.

See more about Gluconolactone →
Aqua (Water)
Neutral

Water is a common solvent used in cosmetic formulations. It helps dissolve other ingredients and provides a base for the product. It does not have any direct benefits or risks.

Benefits

Provides a medium for other ingredients to be delivered effectively.

See more about Aqua (Water) →
Propanediol
Neutral

Propanediol is used as a solvent and skin-conditioning agent. It helps improve the texture and feel of the product. It is generally considered safe for use in cosmetics.

Risks

May cause mild irritation in sensitive individuals.

Benefits

Enhances skin hydration and improves product texture.

See more about Propanediol →
Butylene Glycol
Neutral

Butylene Glycol is a common humectant that helps retain moisture in the skin. It also acts as a solvent for other ingredients. It is widely used in cosmetics and considered safe.

Risks

Potential for mild irritation in sensitive skin types.

Benefits

Helps maintain skin hydration and improves product spreadability.

See more about Butylene Glycol →
Caffeine
Neutral

Standard formulation ingredient — neither beneficial nor harmful at typical use.

Risks

May cause mild irritation in sensitive individuals.

Benefits

Improves circulation and provides antioxidant protection.

See more about Caffeine →
Calcium Gluconate
Neutral

Calcium Gluconate is used as a conditioning agent and stabilizer in cosmetic formulations. It helps improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Benefits

Improves product texture and stability.

See more about Calcium Gluconate →
Zinc Chloride
Neutral

Zinc Chloride is used as a stabilizer and preservative in cosmetic formulations. It helps maintain the product's shelf life and stability. It is generally considered safe for use in cosmetics.

Risks

May cause mild irritation in sensitive individuals.

Benefits

Maintains product stability and shelf life.

Lactic Acid
Neutral

Lactic Acid is an alpha hydroxy acid used for its exfoliating and pH-adjusting properties. It helps improve skin texture and maintain the product's pH balance. It is generally considered safe for use in cosmetics.

Risks

May cause mild irritation in sensitive skin types.

Benefits

Exfoliates and maintains product pH balance.

See more about Lactic Acid →
Dextran
Neutral

Dextran is used as a film-forming agent and stabilizer in cosmetic formulations. It helps improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Benefits

Improves product texture and stability.

Maltodextrin
Neutral

Maltodextrin is used as a film-forming agent and stabilizer in cosmetic formulations. It helps improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Benefits

Improves product texture and stability.

See more about Maltodextrin →
Hydroxyethylcellulose
Neutral

Hydroxyethylcellulose is used as a thickening and stabilizing agent in cosmetic formulations. It helps improve the texture and viscosity of the product. It is generally considered safe for use in cosmetics.

Benefits

Improves product texture and viscosity.

See more about Hydroxyethylcellulose →
Xanthan Gum
Neutral

Xanthan Gum is used as a thickening and stabilizing agent in cosmetic formulations. It helps improve the texture and viscosity of the product. It is generally considered safe for use in cosmetics.

Benefits

Improves product texture and viscosity.

See more about Xanthan Gum →
Pentylene Glycol
Neutral

Pentylene Glycol is used as a solvent and skin-conditioning agent in cosmetic formulations. It helps improve the texture and feel of the product. It is generally considered safe for use in cosmetics.

Benefits

Improves product texture and feel.

See more about Pentylene Glycol →
Dimethyl Isosorbide
Neutral

Dimethyl Isosorbide is used as a solvent and penetration enhancer in cosmetic formulations. It helps improve the delivery of active ingredients. It is generally considered safe for use in cosmetics.

Benefits

Enhances delivery of active ingredients.

See more about Dimethyl Isosorbide →
Polysorbate 20
Neutral

Polysorbate 20 is used as an emulsifier and surfactant in cosmetic formulations. It helps improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Benefits

Improves product texture and stability.

See more about Polysorbate 20 →
PPG-26-Buteth-26
Neutral

PPG-26-Buteth-26 is used as a surfactant and emulsifier in cosmetic formulations. It helps improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Benefits

Improves product texture and stability.

See more about PPG-26-Buteth-26 →
PEG-40 Hydrogenated Castor Oil
Neutral

PEG-40 Hydrogenated Castor Oil is used as an emulsifier and surfactant in cosmetic formulations. It helps improve the texture and stability of the product. It is generally considered safe for use in cosmetics.

Benefits

Improves product texture and stability.

See more about PEG-40 Hydrogenated Castor Oil →
Trisodium Ethylenediamine Disuccinate
Neutral

Trisodium Ethylenediamine Disuccinate is used as a chelating agent in cosmetic formulations. It helps improve the stability and efficacy of the product. It is generally considered safe for use in cosmetics.

Benefits

Improves product stability and efficacy.

See more about Trisodium Ethylenediamine Disuccinate →
Chlorphenesin
Neutral

Chlorphenesin is used as a preservative in cosmetic formulations. It helps prevent microbial growth and extend the product's shelf life. It is generally considered safe for use in cosmetics.

Risks

May cause mild irritation in sensitive individuals.

Benefits

Prevents microbial growth and extends shelf life.

See more about Chlorphenesin →
Sodium Metabisulfite
Bad

Sodium Metabisulfite is used as a preservative and antioxidant in cosmetic formulations. It can cause allergic reactions and irritation in sensitive individuals. It is considered a potential irritant in cosmetics.

Risks

May cause allergic reactions and irritation in sensitive individuals.

Benefits

Acts as a preservative and antioxidant.

See more about Sodium Metabisulfite →
Sodium Benzoate
Bad

Synthetic preservative that can form benzene in the presence of vitamin C.

Risks

May cause mild irritation in sensitive individuals.

Benefits

Prevents microbial growth and extends shelf life.

See more about Sodium Benzoate →
Phenoxyethanol
Bad

Phenoxyethanol is used as a preservative in cosmetic formulations. It can cause irritation and allergic reactions in sensitive individuals. It is considered a potential irritant in cosmetics.

Risks

May cause irritation and allergic reactions in sensitive individuals.

Benefits

Acts as a preservative to prevent microbial growth.

See more about Phenoxyethanol →

Processing

Group 3 · Processed

Processed Foods

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