Masque Extentioniste Hair Mask

Kérastase

Masque Extentioniste Hair Mask

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About this product

The Kérastase Masque Extentioniste Hair Mask is a misc. Our analysis of its 24 ingredients (13 low-risk) rates it Excellent (81/100). Heads up: it contains fragrance, which can irritate sensitive or reactive skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Misc
Ingredients
24
Low-risk
13
Fragrance
Contains fragrance
Origin
France

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 2/4
Good for dry skin
2-Oleamido-1,3-Octadecanediol Cetearyl Alcohol
Caution for dry skin
Behentrimonium Methosulfate Trideceth-6 Hydroxypropyl Guar Cetrimonium Chloride
Oily/Acne-Prone Skin No data
Sensitive Skin 0/12
Caution for sensitive skin
Isopropyl Alcohol Maleic Acid Benzoic Acid Phenoxyethanol Linalool Benzyl Cinnamate Benzyl Alcohol Citronellol Hexyl Cinnamal Limonene Hydroxycitronellal Amyl Cinnamal

Ingredients list

24 total
Lower hazard (1) Higher hazard (7)
All24 Fragrance11 Masking6 Skin Conditioning5 Perfuming5 Preservative5 Antistatic Agent5 Solvent4 Surfactant4
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling)
1
A
Amodimethicone
(Antistatic Agent, Hair Conditioning)
Silicone
Silicone
1
B
Behentrimonium Methosulfate
(Antistatic Agent, Hair Conditioning, Surfactant)
3
B
Behentrimonium Chloride
(Antistatic Agent, Hair Conditioning, Preservative)
5
6
B
Ethanolamine
(Ph Adjuster, Buffering Agent)
3
Maleic Acid
(Fragrance, Ph Adjuster, Buffering Agent)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
2
A
Isopropyl Alcohol
(Antifoaming Agent, Fragrance, Solvent, Viscosity Decreasing Agent, Perfuming, Viscosity Controlling)
Bad for Sensitive Skin
Bad for Sensitive Skin
3
A
Benzoic Acid
(Fragrance, Ph Adjuster, Preservative, Bulking Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
B
Trideceth-6
(Emulsifying, Surfactant)
1
A
Hydroxypropyl Guar
(Binding Agent, Emulsion Stabilising, Film Forming, Viscosity Increasing Agent, Antistatic Agent, Binding, Surfactant, Viscosity Controlling)
Amyl Cinnamal
(Perfuming)
Allergens
Allergens
5
Hexyl Cinnamal
(Fragrance, Masking)
Allergens
Allergens
5
A
Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking)
Allergens
Allergens
3
B
Cetrimonium Chloride
(Antistatic Agent, Cosmetic Biocide, Emulsifying, Surfactant, Antimicrobial, Preservative)
5
Linalool
(Fragrance, Deodorant, Masking)
Allergens
Allergens
7
Hydroxycitronellal
(Fragrance, Masking)
Allergens
Allergens
5
Citronellol
(Fragrance, Masking)
Allergens
Allergens
6
Limonene
(Deodorant, Perfuming, Solvent)
Allergens
Allergens
5
Benzyl Cinnamate
(Fragrance, Perfuming)
Allergens
Allergens
1
Creatine
(Skin Conditioning)
1
A
2-Oleamido-1,3-Octadecanediol
(Skin Conditioning, Emollient)
PARFUM
(Fragrance, Perfuming)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Cetearyl Alcohol
Emollient
Creatine
Skin Conditioning
2-Oleamido-1,3-Octadecanediol
Skin Conditioning, Emollient

Benefits

Fungal-acne (Malassezia) safe

Concerns

Contains paraben
Contains silicone
Contains eu allergen
Hydroxycitronellal — higher EWG
May not suit dry skin
May not suit sensitive skin

EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Cetearyl Alcohol
Emulsion stabilising, Opacifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingOpacifyingFoam boostingViscosity increasingagent - aqueousViscosity increasing agentEmollientEmulsifyingViscosity controlling
Behentrimonium Methosulfate
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Antistatic agentHair conditioningSurfactant
Behentrimonium Chloride
Antistatic agent, Hair conditioning
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Antistatic agentHair conditioningPreservative
Maleic Acid
Fragrance, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 FragrancePh adjusterBuffering agent
Trideceth-6
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmulsifyingSurfactant
Hydroxypropyl Guar
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingFilm formingViscosity increasing agentAntistatic agentBindingSurfactantViscosity controlling
Cetrimonium Chloride
Antistatic agent, Cosmetic biocide
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Antistatic agentCosmetic biocideEmulsifyingSurfactantAntimicrobialPreservative
Creatine
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
2-Oleamido-1,3-Octadecanediol
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningEmollient
PARFUM
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfuming
Amodimethicone
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioning Silicone
Ethanolamine
Ph adjuster, Buffering agent
Moderate-hazard ingredient.Read moreShow less
EWG 5–6 CIR B Ph adjusterBuffering agent
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Isopropyl Alcohol
Antifoaming agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Antifoaming agentFragranceSolventViscosity decreasing agentPerfumingViscosity controlling Bad for Sensitive Skin
Benzoic Acid
Fragrance, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A FragrancePh adjusterPreservativeBulking agentMasking Bad for Sensitive Skin
Amyl Cinnamal
Perfuming
Limited public safety data.Read moreShow less
EWG N/A Perfuming Allergens
Hexyl Cinnamal
Fragrance, Masking
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceMasking Allergens
Benzyl Alcohol
External analgesic, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR A External analgesicFragranceOral health care drugPreservativeSolventViscosity decreasing agentMasking Allergens
Linalool
Fragrance, Deodorant
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceDeodorantMasking Allergens
Hydroxycitronellal
Fragrance, Masking
Higher-hazard ingredient.Read moreShow less
EWG 7 FragranceMasking Allergens
Citronellol
Fragrance, Masking
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceMasking Allergens
Limonene
Deodorant, Perfuming
Moderate-hazard ingredient.Read moreShow less
EWG 6 DeodorantPerfumingSolvent Allergens
Benzyl Cinnamate
Fragrance, Perfuming
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragrancePerfuming Allergens

How to use

How to use

  • 1 Morning & evening: Suitable for both AM and PM use.

General guidance from this product's category and active ingredients — always follow the directions on the package.

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