Hyaluronic Acid 2% + B5 Hydrating Serum
The cyrene Hyaluronic Acid 2% + B5 Hydrating Serum is a serums, essence, ampoule. Our analysis of its 18 ingredients (17 low-risk) rates it Excellent (94/100). Based on its ingredients, it looks well-suited to dry skin.
The cyrene Hyaluronic Acid 2% + B5 Hydrating Serum is a serums, essence, ampoule. Our analysis of its 18 ingredients (17 low-risk) rates it Excellent (94/100). Based on its ingredients, it looks well-suited to dry 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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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
|
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Hyaluronic Acid
(Skin Conditioning, Viscosity Increasing Agent, Antistatic Agent, Humectant, Moisturising) |
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Pentylene Glycol
(Skin Conditioning, Solvent) |
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Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
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Sodium Hyaluronate Crosspolymer
(Humectant, Skin Conditioning) |
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Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning) |
Good for Dry Skin
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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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Trehalose
(Flavoring Agent, Humectant, Moisturising) |
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Urea
(Buffering Agent, Humectant, Antistatic Agent, Skin Conditioning) |
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Serine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Glyceryl Polyacrylate
(Film Forming) |
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Algin
(Binding Agent, Fragrance, Viscosity Increasing Agent, Binding, Masking, Viscosity Controlling) |
Bad for Sensitive Skin
Bad for Oily Skin
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Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant) |
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Pullulan
(Binding Agent, Film Forming, Binding) |
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Disodium Phosphate
(Buffering Agent, Anticorrosive, Fragrance, Ph Adjuster, Masking) |
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Potassium Phosphate
(Ph Adjuster, Buffering Agent) |
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Phenol
(Antimicrobial Agent, Cosmetic Biocide, Denaturant, Deodorant, Exfoliant, Externalanalgesic, Fragrance, Oral Health Care Drug, 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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