Vitamin C 20% Serum
The Doa Kozmetik Vitamin C 20% Serum is a emulsion. Our analysis of its 12 ingredients (10 low-risk) rates it Excellent (96/100). Based on its ingredients, it looks well-suited to dry skin.
The Doa Kozmetik Vitamin C 20% Serum is a emulsion. Our analysis of its 12 ingredients (10 low-risk) rates it Excellent (96/100). Based on its ingredients, it looks well-suited to dry 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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Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic) |
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3-O-ETHYL ASCORBIC ACID
(Skin Conditioning) |
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Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning) |
Good for Dry Skin
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Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing) |
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Trehalose
(Flavoring Agent, Humectant, Moisturising) |
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Pentylene Glycol
(Skin Conditioning, Solvent) |
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Isopentyldiol
(Solvent) |
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Saccharide Isomerate
(Humectant) |
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
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Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant) |
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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.
3-O-ETHYL 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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