Defense Thermique Blow Dry Primer

Kérastase

Defense Thermique Blow Dry Primer

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About this product

The Kérastase Defense Thermique Blow Dry Primer is a misc. Our analysis of its 37 ingredients (23 low-risk) rates it Excellent (85/100). 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
37
Low-risk
23
Fragrance
Contains fragrance
Origin
France
SPF
7 · blocks 85.7% UVB

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 7/8
Good for dry skin
Anhydroxylitol Xylose Xylitol Xylitylglucoside Glycerin Propylene Glycol Dicaprylate/Dicaprate PPG-1 Trideceth-6
Caution for dry skin
Sorbitan Oleate Xanthan Gum Glycerin Trideceth-6 PPG-1 Trideceth-6 Dimethicone PEG-7 Phosphate Cetrimonium Chloride Sodium Hydroxide
Oily/Acne-Prone Skin 0/1
Caution for oily/acne-prone skin
Propylene Glycol Dicaprylate/Dicaprate
Sensitive Skin 1/15
Good for sensitive skin
Glycerin
Caution for sensitive skin
Sorbitan Oleate Xylose Glycerin Citric Acid Isopropyl Alcohol Potassium Sorbate Phenoxyethanol Linalool Benzyl Alcohol Citronellol Limonene Benzyl Benzoate Benzyl Salicylate Citral Coumarin

Ingredients list

37 total
Lower hazard (1) Higher hazard (7)
All37 Fragrance18 Skin Conditioning16 Masking9 Humectant9 Perfuming6 Solvent6 Hair Conditioning6 Preservative5
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
cocos nucifera oil
(Fragrance, Hair Conditioning, Perfuming, Skin Conditioning)
1
A
Amodimethicone
(Antistatic Agent, Hair Conditioning)
Silicone
Silicone
1
B
Polyquaternium-37
(Antistatic Agent, Film Forming, Hair Fixing)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
B
Propylene Glycol Dicaprylate/Dicaprate
(Skin Conditioning Agent Occlusive, Emollient)
1
Xylitylglucoside
(Humectant, Skin Conditioning)
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)
1
Anhydroxylitol
(Humectant, Skin Conditioning)
1
Xylitol
(Flavoring Agent, Humectant, Skin Conditioning)
3
A
Dimethicone PEG-7 Phosphate
(Cleansing, Emulsifying, Surfactant)
1
B
PPG-1 Trideceth-6
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
1
B
Trideceth-6
(Emulsifying, Surfactant)
3
B
Behentrimonium Chloride
(Antistatic Agent, Hair Conditioning, Preservative)
6
Limonene
(Deodorant, Perfuming, Solvent)
Allergens
Allergens
1
A
Xylose
(Flavoring Agent, Fragrance, Humectant, Masking, Skin Conditioning)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Sorbitan Oleate
(Fragrance, Emulsifying, Surfactant)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
5
Linalool
(Fragrance, Deodorant, Masking)
Allergens
Allergens
2
A
Isopropyl Alcohol
(Antifoaming Agent, Fragrance, Solvent, Viscosity Decreasing Agent, Perfuming, Viscosity Controlling)
Bad for Sensitive Skin
Bad for Sensitive Skin
3
B
Cetrimonium Chloride
(Antistatic Agent, Cosmetic Biocide, Emulsifying, Surfactant, Antimicrobial, Preservative)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
Hydrolyzed Vegetable Protein PG-Propyl Silanetriol
(Hair Conditioning, Skin Conditioning)
7
Benzyl Salicylate
(Fragrance, Uv Absorber, Masking)
Allergens
Allergens
7
Coumarin
(Fragrance, Masking)
Allergens
Allergens
Zingiber Officinale Root Extract
(Fragrance, Perfuming, Skin Conditioning, Tonic)
7
Citral
(Flavoring Agent, Fragrance, Masking)
Allergens
Allergens
5
A
Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking)
Allergens
Allergens
5
Citronellol
(Fragrance, Masking)
Allergens
Allergens
6
A
Benzyl Benzoate
(Fragrance, Solvent, Antimicrobial, Masking)
Allergens
Allergens
Leontopodium Alpinum Callus Culture Extract
(Antioxidant, Hair Conditioning, Humectant, Skin Protecting)
3
A
Potassium Sorbate
(Fragrance, Preservative)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
Dipeptide Diaminobutyroyl Benzylamide Diacetate
(Skin Conditioning)
PARFUM
(Fragrance, Perfuming)

My Ingredient Notes

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Key ingredients

Antioxidants
Shields skin from free radical damage.
Vitamin E
Protects skin and soothes irritation.
Peptides
Supports skin hydration and improves firmness.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Barrier RepairStrengthen and restore your skin's natural barrier.
Anti-AgingSoftens lines and helps skin look youthful.
Scar HealingImproves the look of marks and scars.
BrighteningRestores radiance to dull, tired skin.
Reduces IrritationEases discomfort and supports skin resilience.
Redness ReducingSoothes visible redness and calms irritation.
Dark SpotsFades dark spots for even skin tone.

Concerns

Contains paraben
Contains silicone
Contains eu allergen
Not fungal acne (malassezia) safe
Benzyl Salicylate — higher EWG
Coumarin — higher EWG
Citral — higher EWG
May not suit dry 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
cocos nucifera oil
Fragrance, Hair conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceHair conditioningPerfumingSkin conditioning
Polyquaternium-37
Antistatic agent, Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Antistatic agentFilm formingHair fixing
Propylene Glycol Dicaprylate/Dicaprate
Skin-conditioning agent - occlusive, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin-conditioning agent - occlusiveEmollient
Xylitylglucoside
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
Sodium Hydroxide
Denaturant, Ph adjuster
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B DenaturantPh adjusterBuffering agent
Anhydroxylitol
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
Xylitol
Flavoring agent, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Flavoring agentHumectantSkin conditioning
Dimethicone PEG-7 Phosphate
Cleansing, Emulsifying
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A CleansingEmulsifyingSurfactant
PPG-1 Trideceth-6
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollientEmulsifyingSurfactant
Trideceth-6
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B EmulsifyingSurfactant
Behentrimonium Chloride
Antistatic agent, Hair conditioning
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Antistatic agentHair conditioningPreservative
Xylose
Flavoring agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Flavoring agentFragranceHumectantMaskingSkin conditioning
Ethylhexylglycerin
Deodorant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A DeodorantSkin conditioning
Cetrimonium Chloride
Antistatic agent, Cosmetic biocide
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Antistatic agentCosmetic biocideEmulsifyingSurfactantAntimicrobialPreservative
+ 8 more — see the full ingredients list above
Amodimethicone
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioning Silicone
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Limonene
Deodorant, Perfuming
Moderate-hazard ingredient.Read moreShow less
EWG 6 DeodorantPerfumingSolvent Allergens
Sorbitan Oleate
Fragrance, Emulsifying
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceEmulsifyingSurfactant Bad for Oily SkinFungal-acne trigger
Linalool
Fragrance, Deodorant
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceDeodorantMasking Allergens
Isopropyl Alcohol
Antifoaming agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Antifoaming agentFragranceSolventViscosity decreasing agentPerfumingViscosity controlling Bad for Sensitive Skin
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Benzyl Salicylate
Fragrance, Uv absorber
Higher-hazard ingredient.Read moreShow less
EWG 7 FragranceUv absorberMasking Allergens
Coumarin
Fragrance, Masking
Higher-hazard ingredient.Read moreShow less
EWG 7 FragranceMasking Allergens
Citral
Flavoring agent, Fragrance
Higher-hazard ingredient.Read moreShow less
EWG 7 Flavoring agentFragranceMasking Allergens
Benzyl Alcohol
External analgesic, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR A External analgesicFragranceOral health care drugPreservativeSolventViscosity decreasing agentMasking Allergens
Citronellol
Fragrance, Masking
Moderate-hazard ingredient.Read moreShow less
EWG 5 FragranceMasking Allergens
Benzyl Benzoate
Fragrance, Solvent
Moderate-hazard ingredient.Read moreShow less
EWG 6 CIR A FragranceSolventAntimicrobialMasking Allergens
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin

How to use

How to use

  • 1 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.

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

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