Keratin Heat Hitzeschutzspray
The Syoss Keratin Heat Hitzeschutzspray is a misc. Our analysis of its 23 ingredients (15 low-risk) rates it Excellent (96/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
The Syoss Keratin Heat Hitzeschutzspray is a misc. Our analysis of its 23 ingredients (15 low-risk) rates it Excellent (96/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin. 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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Alcohol Denat.
(Antifoaming Agent, Antimicrobial, Astringent, Masking, Solvent, Viscosity Controlling) |
Bad for Dry Skin
Bad for Sensitive Skin
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Hydrolyzed Keratin
(Hair Conditioning, Nail Conditioning Agent, Skin Conditioning, Antistatic Agent, Film Forming, Humectant) |
|
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Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning) |
Good for Dry Skin
|
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Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing) |
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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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Polyurethane-48
(Film Forming) |
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Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking) |
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PEG-60 Hydrogenated Castor Oil
(Fragrance, Sufactant, Surfactant) |
Fungal Acne Trigger
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PARFUM
(Fragrance, Perfuming) |
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Bis-Isobutyl PEG/PPG-20/35/Amodimethicone Copolymer
(Hair Conditioning) |
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Cetyl Ethylhexanoate
(Skin Conditioning, Emollient) |
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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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Polysorbate 80
(Denaturant, Emulsifying, Surfactant) |
Fungal Acne Trigger
|
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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Gluconolactone
(Fragrance, Humectant, Solvent) |
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Methylpropanediol
(Solvent) |
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Tetramethyl Acetyloctahydronaphthalenes
(Masking, Perfuming, Skin Conditioning) |
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6-Methyl-5-Hepten-2-Ol
(Perfuming) |
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Trimethylcyclopentenyl Dimethylisopentenol
(Perfuming) |
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Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant) |
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Dimethyl Phenylethyl Carbinyl Acetate
(Perfuming) |
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Terpineol
(Denaturant, Masking, Perfuming, Solvent) |
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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.
Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.
Niacinamide
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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