#2 The Hydragel
The Rationale #2 The Hydragel is a emulsion. Our analysis of its 95 ingredients (66 low-risk) rates it Excellent (95/100). 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 Rationale #2 The Hydragel is a emulsion. Our analysis of its 95 ingredients (66 low-risk) rates it Excellent (95/100). 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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Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
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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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Methylpropanediol
(Solvent) |
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PEG-40 Hydrogenated Castor Oil
(Fragrance, Emulsifying, Surfactant, Perfuming) |
Fungal Acne Trigger
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Trideceth-9
(Emulsifying, Surfactant) |
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Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant) |
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Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling) |
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TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning) |
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Bis-Ethylhexyl Hydroxydimethoxy Benzylmalonate
(Antioxidant, Skin Conditioning, Skin Protecting) |
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Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
(Emulsion Stabilising, Viscosity Controlling) |
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Helianthus Annuus Seed Oil
(Fragrance, Skin Conditioning, Skin Conditioning Emollient) |
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Phenylpropanol
(Masking, Perfuming, Solvent) |
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Ascorbyl Tetraisopalmitate
(Antioxidant, Skin Conditioning, Emollient) |
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Santalum Spicatum Seed Oil
(Skin Conditioning) |
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Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning) |
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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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Disodium EDTA
(Chelating Agent, Viscosity Controlling) |
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Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent) |
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Superoxide Dismutase
(Reducing, Skin Conditioning, Antioxidant) |
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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Polysorbate 20
(Emulsifying, Surfactant) |
Fungal Acne Trigger
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Retinol
(Skin Conditioning) |
Bad for Sensitive Skin
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Sodium Potassium Aluminum Silicate
(Bulking Agent) |
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Carnosine
(Skin Conditioning) |
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Glutathione
(Fragrance, Reducing) |
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Sodium Ascorbyl Phosphate
(Antioxidant) |
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Melanin
(Skin Conditioning, Skin Protecting) |
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Polysorbate 60
(Emulsifying, Surfactant) |
Fungal Acne Trigger
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Sorbitan Isostearate
(Emulsifying, Surfactant) |
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Pentylene Glycol
(Skin Conditioning, Solvent) |
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Ceteareth-25
(Cleansing, Emulsifying, Surfactant) |
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Maltodextrin
(Absorbent, Binding Agent, Emulsion Stabilising, Film Forming, Hair Conditioning, Skin Conditioning, Suspending Agent Nonsurfactant, Binding) |
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Magnesium Aspartate
(Skin Conditioning) |
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Zinc Gluconate
(Cosmetic Biocide, Skin Conditioning, Deodorant) |
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Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling) |
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Brachychiton Acerifolius Flower Extract
(Antioxidant, Hair Conditioning, Skin Conditioning) |
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Tocopheryl Acetate
(Antioxidant, Skin Conditioning) |
Bad for Oily Skin
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Cetyl Alcohol
(Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling) |
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BHT
(Antioxidant, Fragrance, Masking) |
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Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
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Ubiquinone
(Antioxidant, Skin Conditioning) |
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BHA
(Antioxidant, Fragrance, Masking) |
Bad for Sensitive Skin
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Behenic Acid
(Opacifying, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Behenic Acid., Emulsifying) |
Fungal Acne Trigger
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Ceramide NP
(Hair Conditioning, Skin Conditioning) |
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Cholesterol
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Emollient, Emulsifying, Stabilising, Viscosity Controlling) |
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Copper Gluconate
(Skin Conditioning, Skin Protecting) |
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
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Ceramide NS
(Hair Conditioning, Skin Conditioning) |
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Glycine
(Buffering Agent, Fragrance, Hair Conditioning, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Skin Conditioning) |
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Serine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Glutamic Acid
(Fragrance, Hair Conditioning, Humectant, Antistatic Agent) |
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Ceramide AP
(Hair Conditioning, Skin Conditioning) |
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Ceramide EOP
(Hair Conditioning, Skin Conditioning) |
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Ceramide EOS
(Hair Conditioning, Skin Conditioning) |
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Banksia Serrata Flower Extract
(Hair Conditioning, Skin Conditioning) |
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Citrus Australasica Fruit Extract
(Antioxidant, Humectant, Skin Conditioning) |
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Davidsonia Pruriens Fruit Extract
(Antioxidant, Hair Conditioning, Humectant, Skin Conditioning) |
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Hibiscus Sabdariffa Flower Extract
(Skin Conditioning) |
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MELALEUCA ALTERNIFOLIA LEAF EXTRACT
(Perfuming, Skin Conditioning) |
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Santalum Acuminatum Fruit Extract
(Antioxidant, Hair Conditioning, Humectant) |
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Tasmannia Lanceolata Fruit Extract
(Skin Conditioning) |
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Telopea Speciosissima Flower/Leaf Extract
(Antioxidant, Bleaching, Humectant, Skin Conditioning, Skin Protecting) |
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Terminalia Ferdinandiana Fruit Extract
(Antioxidant, Bleaching) |
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Aspartic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Leucine
(Antistatic Agent, Hair Conditioning, Skin Conditioning) |
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Caprooyl Phytosphingosine
(Hair Conditioning, Skin Conditioning) |
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Caprooyl Sphingosine
(Hair Conditioning, Skin Conditioning) |
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Alanine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Lysine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent) |
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Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Tyrosine
(Fragrance, Hair Conditioning, Proprietary, Skin Conditioning Agent Miscellaneous, Antistatic Agent, Masking, Skin Conditioning) |
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Phenylalanine
(Fragrance, Hair Conditioning, Skin Conditioning) |
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Proline
(Fragrance, Hair Conditioning, Skin Conditioning) |
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Threonine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Hair Waving Or Straightening) |
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Valine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Isoleucine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent) |
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Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking) |
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Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
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Histidine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Humectant) |
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Potassium Sorbate
(Fragrance, Preservative) |
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PARFUM
(Fragrance, Perfuming) |
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Limonene
(Deodorant, Perfuming, Solvent) |
Allergens
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Citral
(Flavoring Agent, Fragrance, Masking) |
Allergens
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CI 77891
(Colorant) |
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Juniperus Mexicana Oil
(Fragrance, Masking) |
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Citrus Aurantium Dulcis Oil
(Fragrance) |
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Citrus Aurantium Bergamia Leaf Oil
(Astringent) |
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Pelargonium Graveolens Oil
(Masking, Perfuming) |
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Citrus Aurantium Amara Flower Oil
(Fragrance, Skin Conditioning) |
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Eugenia Caryophyllus Leaf Oil
(Fragrance, Perfuming, Skin Conditioning, Tonic) |
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Litsea Cubeba Fruit Oil
(Masking, Perfuming, Tonic) |
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Citrus Aurantium Bergamia Fruit Oil
(Fragrance, Perfuming) |
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citrus grandis peel oil
(Fragrance, Perfuming, Skin Conditioning) |
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Citrus Medica Limonum (Lemon) Oil |
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
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.
Trust & honesty
Contains ingredients some choose to avoid or double-check while pregnant or nursing.
Topical retinoids (retinol, retinaldehyde, retinyl esters) are widely advised against in pregnancy as a precaution. The strongest evidence is for ORAL retinoids; topical absorption is low, but most clinicians err on the side of caution.
This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.
The concentrations these actives are typically effective at in research — not a measurement of this product.
Most studied between 0.1% and 1%. Higher is not automatically better — irritation climbs with dose, so a well-formulated lower strength is often the sweet spot.
Retinol
L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.
Ascorbyl Tetraisopalmitate, Sodium Ascorbyl Phosphate
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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