Kate Somerville Mega-C Dual Radiance Serum

Kate Somerville

Where to buy Possibly in stock

About this product

The Kate Somerville Mega-C Dual Radiance Serum is a serums, essence, ampoule. Our analysis of its 41 ingredients (39 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.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
41
Low-risk
39
Fragrance
Contains fragrance
Origin
United States

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 13/12
Good for dry skin
Neopentyl Glycol Diethylhexanoate Diisopropyl Dimer Dilinoleate Rosmarinus Officinalis (Rosemary) Leaf Extract Linolenic Acid Linoleic Acid Methyl Glucose Sesquistearate Borago Officinalis Seed Oil Hippophae Rhamnoides Oil Cetyl Alcohol Caprylic/Capric Triglyceride Glycerin PEG-20 Methyl Glucose Sesquistearate Lecithin
Caution for dry skin
Linolenic Acid Linoleic Acid Magnesium Aluminum Silicate Maltodextrin Cetyl Alcohol Sodium Starch Octenylsuccinate Xanthan Gum Glycerin Sodium Hydroxide PEG-20 Methyl Glucose Sesquistearate Silica Lecithin
Oily/Acne-Prone Skin 1/1
Good for oily/acne-prone skin
Sodium Ascorbyl Phosphate
Caution for oily/acne-prone skin
Rosmarinus Officinalis (Rosemary) Leaf Extract
Sensitive Skin 5/10
Good for sensitive skin
Rosmarinus Officinalis (Rosemary) Leaf Extract Sodium Ascorbyl Phosphate Oryza Sativa (Rice) Bran Extract Glycerin Tocopheryl Acetate
Caution for sensitive skin
Rosmarinus Officinalis (Rosemary) Leaf Extract Linolenic Acid Linoleic Acid Cetyl Alcohol Caprylic/Capric Triglyceride Glycerin Citric Acid Sodium Benzoate Phenoxyethanol Fragrance

Ingredients list

41 total
Lower hazard (1) Higher hazard (8)
All41 Skin Conditioning33 Emollient11 Fragrance8 Emulsion Stabilising8 Viscosity Controlling7 Hair Conditioning7 Viscosity Increasing Agent6 Antistatic Agent5
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
Neopentyl Glycol Diethylhexanoate
(Skin Conditioning, Emollient, Viscosity Increasing Agent)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Methyl Glucose Sesquistearate
(Skin Conditioning, Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
A
Cetyl Alcohol
(Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling)
1
A
Diisopropyl Dimer Dilinoleate
(Skin Conditioning, Emollient)
3
A
PEG-20 Methyl Glucose Sesquistearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
8
Fragrance
(Deodorant, Masking, Perfuming)
1
A
HDI/Trimethylol Hexyllactone Crosspolymer
(Anticaking Agent)
1
Polymethylsilsesquioxane
(Opacifying)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
A
Magnesium Aluminum Silicate
(Absorbent, Anticaking Agent, Opacifying, Slip Modifier, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Borago Officinalis Seed Oil
(Emollient, Skin Conditioning)
1
Tocopherol (Vitamin E) Good for Dry Skin
Good for Dry Skin
1
A
Elaeis Guineensis (Palm) Oil Fungal Acne
Fungal Acne Trigger
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
A
Helianthus Annuus (Sunflower) Seed Oil Fungal Acne
Fungal Acne Trigger
1
Linoleic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Linoleic Acid., Antistatic Agent, Emollient)
Fungal Acne
Fungal Acne Trigger
1
Linolenic Acid
(Fragrance, Hair Conditioning, Skin Conditioning, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Linolenic Acid., Antistatic Agent, Emollient, Perfuming)
Fungal Acne
Fungal Acne Trigger
1
A
Oryza Sativa (Rice) Bran Extract
(Skin Conditioning, Skin Protecting)
1
B
Rosmarinus Officinalis (Rosemary) Leaf Extract
(Antimicrobial Agent, Antioxidant, Fragrance, Skin Conditioning Agent Miscellaneous, Skin Conditioning Agent Occlusive, Perfuming)
1
Calcium Pantothenate
(Antistatic Agent, Hair Conditioning)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Hippophae Rhamnoides Oil
(Emollient, Skin Conditioning)
Fungal Acne
Fungal Acne Trigger
2
3
Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient)
1
A
Maltodextrin
(Absorbent, Binding Agent, Emulsion Stabilising, Film Forming, Hair Conditioning, Skin Conditioning, Suspending Agent Nonsurfactant, Binding)
1
Pyridoxine HCl
(Hair Conditioning, Skin Conditioning, Antistatic Agent)
1
2
A
Silica
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Viscosity Controlling)
1
A
Sodium Ascorbyl Phosphate
(Antioxidant)
3
A
Sodium Benzoate
(Fragrance, Preservative, Anticorrosive, Masking)
1
A
Sodium Starch Octenylsuccinate
(Absorbent, Emulsion Stabilising, Viscosity Increasing Agent, Viscosity Controlling)
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
1
A
Tocotrienols
(Oral Care Agent, Skin Conditioning, Uv Absorber)
1
Adenosine
(Skin Conditioning)
1
Sea Whip Extract
(Skin Conditioning)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
3
B
Sodium Hydroxide
(Denaturant, Ph Adjuster, Buffering Agent)

My Ingredient Notes

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Key ingredients

Neopentyl Glycol Diethylhexanoate
Skin Conditioning, Emollient
Methyl Glucose Sesquistearate
Skin Conditioning, Emollient
Glycerin
Humectant, Skin Protecting
Cetyl Alcohol
Emollient
Diisopropyl Dimer Dilinoleate
Skin Conditioning, Emollient
PEG-20 Methyl Glucose Sesquistearate
Skin Conditioning, Emollient

Benefits

Good for dry skin

Concerns

Contains paraben
Not fungal acne (malassezia) safe
Fragrance — higher EWG
May not suit sensitive skin

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 →

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Neopentyl Glycol Diethylhexanoate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollientViscosity increasing agent
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Cetyl Alcohol
Emulsion stabilising, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingFragranceOpacifyingEmulsifyingSurfactantFoam boostingViscosity increasing agentEmollientMaskingViscosity controlling
Diisopropyl Dimer Dilinoleate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningEmollient
PEG-20 Methyl Glucose Sesquistearate
Skin conditioning, Emollient
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Skin conditioningEmollientEmulsifyingSurfactant
HDI/Trimethylol Hexyllactone Crosspolymer
Anticaking agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Anticaking agent
Polymethylsilsesquioxane
Opacifying
Low-hazard ingredient.Read moreShow less
EWG 1 Opacifying
Magnesium Aluminum Silicate
Absorbent, Anticaking agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbsorbentAnticaking agentOpacifyingSlip modifierViscosity increasing agentViscosity controlling
Borago Officinalis Seed Oil
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientSkin conditioning
Xanthan Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingSkin conditioningSurfactant -emulsifying agentViscosity increasing agentBindingGel formingViscosity controlling
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Oryza Sativa (Rice) Bran Extract
Skin conditioning, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSkin protecting
Rosmarinus Officinalis (Rosemary) Leaf Extract
Antimicrobial agent, Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Antimicrobial agentAntioxidantFragranceSkin-conditioning agent -miscellaneousSkin-conditioning agent - occlusivePerfuming
Calcium Pantothenate
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Antistatic agentHair conditioning
+ 14 more — see the full ingredients list above
Methyl Glucose Sesquistearate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningEmollientEmulsifying Fungal-acne trigger
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Fragrance
Deodorant, Masking
Higher-hazard ingredient.Read moreShow less
EWG 8 DeodorantMaskingPerfuming
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Tocopherol (Vitamin E)
Other
Low-hazard ingredient.Read moreShow less
EWG 1 Good for Dry Skin
Elaeis Guineensis (Palm) Oil
Other
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Fungal-acne trigger
Helianthus Annuus (Sunflower) Seed Oil
Other
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Fungal-acne trigger
Linoleic Acid
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceHair conditioningSkin conditioningSufactantsurfactant-cleansing agent is included as a function for the soap form of linoleic acid.Antistatic agentEmollient Fungal-acne trigger
Linolenic Acid
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceHair conditioningSkin conditioningSufactantsurfactant-cleansing agent is included as a function for the soap form of linolenic acid.Antistatic agentEmollientPerfuming Fungal-acne trigger
Hippophae Rhamnoides Oil
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientSkin conditioning Fungal-acne trigger
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Vitamin C (ascorbic) 5–20%

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.

Sodium Ascorbyl Phosphate

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

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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