Tone Up Brightening Serum
The Oneday Tone Up Brightening Serum is a serums, essence, ampoule. Our analysis of its 19 ingredients (15 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.
The Oneday Tone Up Brightening Serum is a serums, essence, ampoule. Our analysis of its 19 ingredients (15 low-risk) rates it Excellent (98/100). Based on its ingredients, it looks well-suited to oily / acne-prone and 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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Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing) |
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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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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Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling) |
Good for Dry Skin
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Tranexamic Acid
(Cosmetic Astringent, Skin Conditioning) |
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
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Hydroxyethylcellulose
(Binding Agent, Emulsion Stabilising, Film Forming, Viscosity Increasing Agent, Binding, Stabilising, Viscosity Controlling) |
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Aloe Barbadensis Leaf Extract
(Emollient, Humectant, Oral Care Agent, Skin Conditioning) |
Good for Sensitive Skin
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glycyrrhiza glabra root extract
(Bleaching, Perfuming, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing) |
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Tetrasodium Glutamate Diacetate
(Chelating Agent) |
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Glabridin
(Bleaching) |
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Benzoic Acid
(Fragrance, Ph Adjuster, Preservative, Bulking Agent, Masking) |
Bad for Sensitive Skin
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Glutathione
(Fragrance, Reducing) |
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Sodium Nitrate
(Oral Care Agent, Soothing) |
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Sodium Chloride
(Bulking Agent, Masking, Oral Care Agent, Viscosity Controlling) |
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Sodium Glycolate
(Buffering Agent) |
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Sodium Phosphate
(Buffering Agent) |
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Disodium Phosphate
(Buffering Agent, Anticorrosive, Fragrance, Ph Adjuster, Masking) |
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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.
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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