The Brightening Serum
The Tatcha The Brightening Serum is a serums, essence, ampoule. Our analysis of its 44 ingredients (32 low-risk) rates it Excellent (95/100). 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.
The Tatcha The Brightening Serum is a serums, essence, ampoule. Our analysis of its 44 ingredients (32 low-risk) rates it Excellent (95/100). 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.
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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Saccharomyces/Rice Ferment Filtrate
(Skin Conditioning) |
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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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Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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Ascorbyl Glucoside
(Antioxidant) |
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Honey Extract
(Humectant, Skin Conditioning, Moisturising) |
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Camellia Sinensis Leaf Extract
(Antimicrobial, Antioxidant, Astringent, Emollient, Humectant, Masking, Oral Care Agent, Skin Conditioning, Skin Protecting, Tonic, Uv Absorber) |
Good for Oily Skin
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Cladosiphon Okamuranus Extract
(Skin Conditioning) |
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Ferulic Acid
(Antioxidant, Preservative, Uv Absorber, Antimicrobial) |
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Angelica Acutiloba Root Extract
(Skin Conditioning) |
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Prunus Mume Fruit Extract
(Humectant) |
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Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
|
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glycyrrhiza glabra root extract
(Bleaching, Perfuming, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing) |
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Callicarpa Japonica Fruit Extract
(Skin Conditioning) |
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Zizyphus Jujuba Fruit Extract
(Skin Conditioning) |
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Artemisia Capillaris Flower Extract
(Skin Conditioning) |
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Scutellaria Baicalensis Root Extract
(Astringent, Humectant, Soothing) |
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Morus Alba Root Extract
(Bleaching, Skin Conditioning) |
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PPG-13-Decyltetradeceth-24
(Emulsifying, Surfactant) |
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Lysine Carboxymethyl Cysteinate
(Skin Conditioning) |
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Dipotassium Glycyrrhizate
(Flavoring Agent, Skin Conditioning, Humectant) |
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Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling) |
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1,2-Hexanediol
(Solvent) |
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Polyglyceryl-10 Diisostearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant) |
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Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
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Polyglyceryl-10 Laurate
(Skin Conditioning, Emulsifying, Surfactant) |
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Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking) |
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Isostearic Acid
(Binding Agent, Sufactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Isostearic Acid., Binding, Emulsifying) |
Fungal Acne Trigger
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PARFUM
(Fragrance, Perfuming) |
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Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
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Potassium Hydroxide
(Ph Adjuster, Buffering Agent) |
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Chlorphenesin
(Cosmetic Biocide, Antimicrobial, Preservative) |
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
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Citral
(Flavoring Agent, Fragrance, Masking) |
Allergens
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Citrus Aurantium Bergamia Peel Oil | |
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Citrus Limon Peel Oil
(Fragrance, Perfuming, Skin Conditioning) |
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Eucalyptus Globulus |
Bad for Sensitive Skin
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Juniperus Virginiana Oil
(Masking, Tonic) |
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Lavandula Hybrida Extract
(Skin Conditioning Emollient) |
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Limonene
(Deodorant, Perfuming, Solvent) |
Allergens
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Linalool
(Fragrance, Deodorant, Masking) |
Allergens
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Linalyl Acetate
(Fragrance, Masking) |
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Pinene
(Antifoaming, Fragrance) |
No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
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 →
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.
Ascorbyl Glucoside
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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