MEGA-C™ 30% Vitamin C Brightening Mask
The Kate Somerville MEGA-C™ 30% Vitamin C Brightening Mask is a wash-off mask. Our analysis of its 25 ingredients (10 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to dry and sensitive skin.
The Kate Somerville MEGA-C™ 30% Vitamin C Brightening Mask is a wash-off mask. Our analysis of its 25 ingredients (10 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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Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning) |
Silicone
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ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning) |
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Polysilicone-11
(Film Forming) |
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PEG-10 Dimethicone
(Hair Conditioning, Skin Conditioning) |
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Hippophae Rhamnoides Fruit Oil
(Skin Protecting) |
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Divinyldimethicone/Dimethicone/Phenylsilsesquioxane Crosspolymer
(Anticaking, Opacifying, Viscosity Controlling) |
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Carthamus Tinctorius Seed Oil
(Fragrance, Skin Conditioning) |
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BRASSICA CAMPESTRIS SEED OIL
(Skin Conditioning) |
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Bisabolol
(Fragrance, Skin Conditioning, Soothing) |
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glycyrrhiza glabra root extract
(Bleaching, Perfuming, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing) |
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citrus aurantium dulcis peel oil
(Fragrance, Skin Conditioning) |
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Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing) |
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MENTHA VIRIDIS LEAF OIL
(Astringent, Fragrance, Skin Conditioning) |
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Pogostemon Cablin Leaf Oil
(Masking) |
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Zingiber Officinale Root Extract
(Fragrance, Perfuming, Skin Conditioning, Tonic) |
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Ceramide NP
(Hair Conditioning, Skin Conditioning) |
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Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent) |
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Polyglyceryl-3 Diisostearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
Bad for Oily Skin
Fungal Acne Trigger
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Ubiquinone
(Antioxidant, Skin Conditioning) |
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Astragalus Membranaceus Root Extract
(Emollient, Skin Conditioning) |
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Spilanthes Acmella Flower/Leaf/Stem Extract
(Antimicrobial) |
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Althaea Officinalis Root Extract
(Skin Conditioning) |
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Oryza Sativa Bran Extract
(Skin Conditioning, Skin Protecting) |
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rosmarinus officinalis leaf extract
(Antimicrobial, Fragrance, Skin Conditioning) |
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Limonene
(Deodorant, Perfuming, Solvent) |
Allergens
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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.
ASCORBIC ACID
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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