Hydrating Under Eye Primer
The Smashbox Hydrating Under Eye Primer is a misc. Our analysis of its 52 ingredients (46 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to dry and sensitive skin.
The Smashbox Hydrating Under Eye Primer is a misc. Our analysis of its 52 ingredients (46 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to dry and sensitive 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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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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Polyethylene
(Abrasive, Adhesive, Binding Agent, Bulking Agent, Emulsion Stabilising, Film Forming, Oral Care Agentagent, Viscosity Increasing Agent, Viscosity Controlling) |
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Polyperfluoromethylisopropyl Ether
(Skin Conditioning) |
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Caprylic/Capric/Myristic/Stearic Triglyceride
(Emollient, Skin Conditioning, Skin Protecting) |
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Methyl Gluceth-20
(Humectant, Moisturising) |
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Glycereth-26
(Humectant, Viscosity Decreasing Agent, Solvent, Viscosity Controlling) |
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Butyrospermum Parkii Butter
(Skin Conditioning, Viscosity Controlling) |
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Cetyl Esters
(Skin Conditioning, Emollient) |
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Ethylhexyl Hydroxystearate
(Skin Conditioning, Emollient) |
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Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning) |
Silicone
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Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient) |
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
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Hypnea Musciformis Extract
(Skin Protecting) |
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Gelidiella Acerosa Extract
(Skin Protecting) |
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Faex Extract
(Skin Conditioning) |
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Chamomilla Recutita Extract
(Skin Conditioning) |
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Ginkgo Biloba Leaf Extract
(Skin Conditioning) |
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Caffeine
(Fragrance, Skin Conditioning, Masking) |
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Polybutene
(Binding Agent, Epilating Agent, Viscosity Increasing Agent) |
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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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Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning) |
Good for Dry Skin
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Phytosphingosine
(Hair Conditioning, Skin Conditioning) |
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Aminopropyl Ascorbyl Phosphate
(Antioxidant, Skin Conditioning) |
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Trehalose
(Flavoring Agent, Humectant, Moisturising) |
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Dipeptide-2
(Skin Conditioning) |
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Palmitoyl Tetrapeptide-7
(Skin Conditioning) |
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Acetyl Hexapeptide-8
(Humectant, Skin Conditioning) |
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Palmitoyl Oligopeptide
(Skin Conditioning, Sufactant) |
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Sucrose
(Flavoring Agent, Humectant, Skin Conditioning, Soothing) |
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Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling) |
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Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling) |
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Urea
(Buffering Agent, Humectant, Antistatic Agent, Skin Conditioning) |
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Polymethyl Methacrylate
(Film Forming) |
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Glyceryl Polymethacrylate
(Film Forming, Viscosity Controlling) |
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Simethicone
(Antifoaming Agent, Emollient, Hair Conditioning, Skin Conditioning) |
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PEG-8
(Humectant, Solvent) |
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Polyquaternium-51
(Film Forming, Humectant, Skin Conditioning) |
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Steareth-20
(Sufactant, Emulsifying, Surfactant) |
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Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling) |
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Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant) |
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Hexylene Glycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Emulsifying, Perfuming, Skin Conditioning, Surfactant) |
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Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent) |
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Sucrose Stearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
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Hesperidin Methyl Chalcone
(Antioxidant) |
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Ascorbyl Tocopheryl Maleate
(Antioxidant, Skin Conditioning, Emollient) |
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
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Mica
(Cosmetic Colorant, Opacifying) |
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CI 77891
(Colorant) |
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CI 77491
(Colorant, Cosmetic Colorant) |
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CI 77492
(Colorant, Cosmetic Colorant) |
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CI 77499
(Colorant, Cosmetic Colorant) |
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
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.
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.
Aminopropyl Ascorbyl Phosphate, Ascorbyl Tocopheryl Maleate
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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