Retinol Vita C Power Serum

Kate Somerville

Where to buy Possibly in stock

About this product

The Kate Somerville Retinol Vita C Power Serum is a serums, essence, ampoule. Our analysis of its 37 ingredients (30 low-risk) rates it Excellent (93/100). 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
37
Low-risk
30
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 9/6
Good for dry skin
Glyceryl Stearate Dimethiconol Isocetyl Stearate Isohexadecane Caprylic/Capric Triglyceride Butylene Glycol Sodium Hyaluronate Hyaluronic Acid Dimethicone
Caution for dry skin
Sorbitan Isostearate Stearic Acid PEG-7 Trimethylolpropane Coconut Ether Polysorbate 20 Polysorbate 80 PEG-100 Stearate
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Retinol
Sensitive Skin 5/6
Good for sensitive skin
Physalis Angulata Extract Dimethicone Tocopheryl Acetate BHT BHA
Caution for sensitive skin
Stearic Acid Caprylic/Capric Triglyceride Butylene Glycol BHT Retinol BHA

Ingredients list

37 total
Lower hazard (1) Higher hazard (9)
All37 Skin Conditioning25 Viscosity Controlling7 Fragrance7 Solvent6 Emollient6 Emulsifying6 Masking5 Antioxidant5
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
3
A
Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning)
Silicone
Silicone
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
Polysilicone-11
(Film Forming)
3
B
Polysorbate 20
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
B
Isocetyl Stearate
(Skin Conditioning, Emollient)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
Volcanic Soil
(Skin Conditioning)
1
A
Glyceryl Stearate
(Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
1
B
Isohexadecane
(Skin Conditioning, Emollient, Solvent)
3
A
PEG-100 Stearate
(Surfactant)
Fungal Acne
Fungal Acne Trigger
PARFUM
(Fragrance, Perfuming)
9
A
Retinol
(Skin Conditioning)
Bad for Sensitive Skin
Bad for Sensitive Skin
ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning)
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
1
A
Hyaluronic Acid
(Skin Conditioning, Viscosity Increasing Agent, Antistatic Agent, Humectant, Moisturising)
1
Physalis Angulata Extract
(Skin Protecting)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
Hexapeptide-2
(Skin Conditioning)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
A
Amylopectin
(Binding Agent, Viscosity Increasing Agent, Binding, Viscosity Controlling)
1
PEG-7 Trimethylolpropane Coconut Ether
(Emulsifying, Surfactant)
1
Adenosine
(Skin Conditioning)
1
Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
(Emulsion Stabilising, Viscosity Controlling)
1
A
1,2-Hexanediol
(Solvent)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Ammonium Polyacryloyldimethyl Taurate
(Emulsion Stabilising, Viscosity Increasing Agent, Viscosity Controlling)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
A
Polyisobutene
(Binding Agent, Film Forming, Viscosity Increasing Agent, Binding, Viscosity Controlling)
1
A
Sorbitan Isostearate
(Emulsifying, Surfactant)
1
A
Stearic Acid
(Fragrance, Sufactant, Emulsifying, Surfactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Stearic Acid., Emulsion Stabilising, Masking, Refatting)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
3
B
Polysorbate 80
(Denaturant, Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
A
Dimethiconol
(Antifoaming Agent, Skin Conditioning, Emollient, Moisturising)
Silicone
Silicone
1
Caprylhydroxamic Acid
(Chelating Agent)
5
7
BHA
(Antioxidant, Fragrance, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
6
A
BHT
(Antioxidant, Fragrance, Masking)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Antioxidants
Shields skin from free radical damage.
Vitamin E
Protects skin and soothes irritation.
Hyaluronic Acid
Hydrates by attracting and holding water.
Retinoid
Visibly reduces the signs of aging.
Vitamin C
Brightens, evens tone, and supports collagen.
Peptides
Supports skin hydration and improves firmness.
Show all 6 key ingredients

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Anti-AgingSoftens lines and helps skin look youthful.
Barrier RepairStrengthen and restore your skin's natural barrier.
Scar HealingImproves the look of marks and scars.
BrighteningRestores radiance to dull, tired skin.
Dark SpotsFades dark spots for even skin tone.
Good For Oily SkinBalances oil and helps reduce shine.
Redness ReducingSoothes visible redness and calms irritation.

Concerns

Contains silicone
Not fungal acne (malassezia) safe
Retinol — higher EWG
BHA — 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
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Polysilicone-11
Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 Film forming
Volcanic Soil
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Isohexadecane
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollientSolvent
PARFUM
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfuming
ASCORBIC ACID
Antioxidant, Buffering
Limited public safety data.Read moreShow less
EWG N/A AntioxidantBufferingFragranceSkin conditioning
Hyaluronic Acid
Skin conditioning, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningViscosity increasing agentAntistatic agentHumectantMoisturising
Physalis Angulata Extract
Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 Skin protecting
TOCOPHEROL
Antioxidant, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AntioxidantFragranceSkin conditioning
Hexapeptide-2
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Ethylhexylglycerin
Deodorant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A DeodorantSkin conditioning
Amylopectin
Binding agent, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentViscosity increasing agentBindingViscosity controlling
PEG-7 Trimethylolpropane Coconut Ether
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 EmulsifyingSurfactant
Adenosine
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
+ 8 more — see the full ingredients list above
Dimethicone
Antifoaming agent, Skin protecting
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Antifoaming agentSkin protectingEmollientSkin conditioning Silicone
Polysorbate 20
Emulsifying, Surfactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B EmulsifyingSurfactant Fungal-acne trigger
Isocetyl Stearate
Skin conditioning, Emollient
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR B Skin conditioningEmollient Bad for Oily SkinFungal-acne trigger
Glyceryl Stearate
Emollient, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientEmulsifying Fungal-acne trigger
PEG-100 Stearate
Surfactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR A Surfactant Fungal-acne trigger
Retinol
Skin conditioning
Potentially a skin irritantRead moreShow less
EWG 9 CIR A Skin conditioning Bad for Sensitive Skin
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Stearic Acid
Fragrance, Sufactant
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceSufactantEmulsifyingSurfactantsurfactant-cleansing agent is included as a function for the soap form of stearic acid.Emulsion stabilisingMaskingRefatting Bad for Oily SkinFungal-acne trigger
Polysorbate 80
Denaturant, Emulsifying
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B DenaturantEmulsifyingSurfactant Fungal-acne trigger
Dimethiconol
Antifoaming agent, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antifoaming agentSkin conditioningEmollientMoisturising Silicone
BHA
Antioxidant, Fragrance
Higher-hazard ingredient.Read moreShow less
EWG 5–7 AntioxidantFragranceMasking Bad for Sensitive Skin
BHT
Antioxidant, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 6 CIR A AntioxidantFragranceMasking

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Evening: Use at night — start 2–3× a week and build up as your skin tolerates it.
  • 3 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

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

Trust & honesty

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Often avoided
Retinoids (Vitamin A) (Retinol)

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.

Effective levels — general guide

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

Retinoids (Vitamin A) 0.01–1%

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

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.

ASCORBIC 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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