Première Decalcifying System Reparative Pre-Shampoo Treatment
The Kérastase Première Decalcifying System Reparative Pre-Shampoo Treatment is a misc. Our analysis of its 21 ingredients (16 low-risk) rates it Excellent (89/100). Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
The Kérastase Première Decalcifying System Reparative Pre-Shampoo Treatment is a misc. Our analysis of its 21 ingredients (16 low-risk) rates it Excellent (89/100). Heads up: it contains fragrance, which can irritate sensitive or reactive 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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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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Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling) |
Good for Dry Skin
|
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Glycine
(Buffering Agent, Fragrance, Hair Conditioning, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Skin Conditioning) |
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Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
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Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent) |
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PARFUM
(Fragrance, Perfuming) |
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Cetrimonium Chloride
(Antistatic Agent, Cosmetic Biocide, Emulsifying, Surfactant, Antimicrobial, Preservative) |
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PEG-40 Hydrogenated Castor Oil
(Fragrance, Emulsifying, Surfactant, Perfuming) |
Fungal Acne Trigger
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Polysorbate 20
(Emulsifying, Surfactant) |
Fungal Acne Trigger
|
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Polysorbate 80
(Denaturant, Emulsifying, Surfactant) |
Fungal Acne Trigger
|
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
|
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Hydrolyzed Vegetable Protein PG-Propyl Silanetriol
(Hair Conditioning, Skin Conditioning) |
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Quaternium-80
(Antistatic Agent, Hair Conditioning) |
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Limonene
(Deodorant, Perfuming, Solvent) |
Allergens
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Hydroxypropyl Guar
(Binding Agent, Emulsion Stabilising, Film Forming, Viscosity Increasing Agent, Antistatic Agent, Binding, Surfactant, Viscosity Controlling) |
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Hydroxypropyl Guar Hydroxypropyltrimonium Chloride
(Antistatic Agent, Hair Conditioning) |
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Linalool
(Fragrance, Deodorant, Masking) |
Allergens
|
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Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking) |
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Citral
(Flavoring Agent, Fragrance, Masking) |
Allergens
|
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Potassium Sorbate
(Fragrance, Preservative) |
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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 →
How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
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Similar formula, but a safer ingredient profile than this product (89/100).
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