Tatcha brightening and firming vitamin c serum

Ingredients overview

Label order. Colour is our internal rating: green routine, yellow restricted or worth a look, red prohibited or high-risk, grey not yet decoded.

Ingredients are listed in label order; the order reflects the label only, not exact concentrations.

1. Aqua/Water/Eau
2. Saccharomyces/Rice Ferment Filtrate
3. Glycerin
4. Propanediol
5. Butylene Glycol
6. Ascorbyl Glucoside
7. Honey Extract/Extrait De Miel
8. Camellia Sinensis Leaf Extract
9. Cladosiphon Okamuranus Extract
10. Ferulic Acid
11. Angelica Acutiloba Root Extract
12. Prunus Mume Fruit Extract
13. Sodium Hyaluronate
14. Glycyrrhiza Glabra Root Extract
15. Callicarpa Japonica Fruit Extract
16. Ziziphus Jujuba Fruit Extract
17. Artemisia Capillaris Flower Extract
18. Scutellaria Baicalensis Root Extract
19. Morus Alba Root Extract
20. PPG-13-Decyltetradeceth-24
21. Lysine Carboxymethyl Cysteinate
22. Dipotassium Glycyrrhizate
23. Xanthan Gum
24. 1,2-Hexanediol
25. Polyglyceryl-10 Diisostearate
26. Citric Acid
27. Polyglyceryl-10 Laurate
28. Sodium Citrate
29. Isostearic Acid
30. Parfum/Fragrance
31. Ethylhexylglycerin
32. Potassium Hydroxide
33. Chlorphenesin
34. Phenoxyethanol
35. Citral
36. Citrus Aurantium Bergamia Peel Oil
37. Citrus Limon Peel Oil
38. Eucalyptus Globulus Oil
39. Juniperus Virginiana Oil
40. Lavandula Oil
41. Extract
42. Limonene
43. Linalool
44. Linalyl Acetate
45. Pinene

Highlights

Free of alcoholFree of parabensFree of siliconesFree of sulfatesFree of mineral oilFree of formaldehyde releasersContains animal-derivedContains fragranceContains EU-26 allergensContains essential oilsContains PEG

Formulation view A water-based serum utilizing rice ferment filtrate and polyols. It features stable ascorbyl glucoside paired with ferulic acid and green tea for antioxidant effects, thickened with xanthan gum. Preserved with chlorphenesin and phenoxyethanol. Ideal for brightening and firming mixed skin types. Factory note: The slow-release Vitamin C derivative balances efficacy with formulation stability.E · AI inference · to be verified

Key ingredients

溶剂

Aqua/Water/Eau

SKIN CONDITIONING

Saccharomyces/Rice Ferment Filtrate

DENATURANT

Glycerin

SOLVENT

Propanediol

HUMECTANT

Butylene Glycol

ANTIOXIDANT

Ascorbyl Glucoside

保湿剂

Honey Extract/Extrait De Miel

ANTIMICROBIAL

Camellia Sinensis Leaf Extract

Other ingredients

Cladosiphon Okamuranus ExtractFerulic AcidAngelica Acutiloba Root ExtractPrunus Mume Fruit ExtractSodium HyaluronateGlycyrrhiza Glabra Root ExtractCallicarpa Japonica Fruit ExtractZiziphus Jujuba Fruit ExtractArtemisia Capillaris Flower ExtractScutellaria Baicalensis Root ExtractMorus Alba Root ExtractPPG-13-Decyltetradeceth-24Lysine Carboxymethyl CysteinateDipotassium GlycyrrhizateXanthan Gum1,2-HexanediolPolyglyceryl-10 DiisostearateCitric AcidPolyglyceryl-10 LaurateSodium CitrateIsostearic AcidParfum/FragranceEthylhexylglycerinPotassium HydroxideChlorphenesinPhenoxyethanolCitralCitrus Aurantium Bergamia Peel OilCitrus Limon Peel OilEucalyptus Globulus OilJuniperus Virginiana OilLavandula OilExtractLimoneneLinaloolLinalyl AcetatePinene

Skim through

Ingredients explained

Each note carries its evidence level: C comes from official inventories (NMPA names, CosIng functions, annex restrictions); E is AI inference nobody has checked yet — treat it as a candidate. How we grade evidence →

Aqua/Water/Eau

Water as solvent/base; main ingredient, microbial control needed, paired with preservatives.E · AI inference · to be verified

Saccharomyces/Rice Ferment Filtrate

Yeast/rice ferment filtrate with bioactive metabolites; moisturizing and skin-conditioning; natural origin, monitor microbial stability.E · AI inference · to be verified

Glycerin

Workhorse humectant at 3–10%; tacky at high levels, pair with occlusivesC · Official source

Propanediol

Polyol solvent at 1–5%; light feel, aids solubilization, propylene glycol alternativeE · AI inference · to be verified

Butylene Glycol

Polyol humectant and solvent at 1–5%; aids solubilization, light feelC · Official source

Ascorbyl Glucoside

Stable Vitamin C derivative, antioxidant; more stable than pure ascorbic acid, releases activity slowly in neutral/basic conditions.E · AI inference · to be verified

Honey Extract/Extrait De Miel

Honey extract for hydration and soothing; hygroscopic, may feel tacky at high levels, adjust formulation accordingly.E · AI inference · to be verified

Camellia Sinensis Leaf Extract

Green tea extract for antioxidant/astringent; contains caffeine, possible irritation in sensitive skin.E · AI inference · to be verified

Cladosiphon Okamuranus Extract

Cladosiphon okamuranus extract containing polysaccharides, used for moisturizing and skin conditioningE · AI inference · to be verified

Ferulic Acid

Antioxidant, often combined with vitamin C and E; 0.5-2%, photolabileE · AI inference · to be verified

Angelica Acutiloba Root Extract

Herbal extract with flavonoids; skin conditioning agent, low photosensitization risk, potential irritation at high concentrations.E · AI inference · to be verified

Prunus Mume Fruit Extract

Fruit extract as humectant; contains natural polysaccharides, water-soluble.E · AI inference · to be verified

Sodium Hyaluronate

Potent humectant at 0.1–2%; different MW for penetration depth, high levels may draw moistureC · Official source

Glycyrrhiza Glabra Root Extract

Liquorice root extract for soothing and brightening; batch variability, watch polyphenol interactionsE · AI inference · to be verified

Callicarpa Japonica Fruit Extract

Japanese Callycarpa fruit extract, traditionally for antimicrobial and astringent effects; generally mild at typical levels.E · AI inference · to be verified

Ziziphus Jujuba Fruit Extract

Natural antioxidant extract; polyphenols, prone to browning.E · AI inference · to be verified

Artemisia Capillaris Flower Extract

Artemisia flower extract for skin conditioning; alkaloid content, assess tolerance for sensitive skinE · AI inference · to be verified

Scutellaria Baicalensis Root Extract

Scutellaria root extract with baicalin for antioxidant and soothing effects; also provides astringent and humectant properties.E · AI inference · to be verified

Morus Alba Root Extract

Mulberry root extract with resveratrol-like compounds; whitening and conditioning; plant-based, control concentration to avoid irritation.E · AI inference · to be verified

PPG-13-Decyltetradeceth-24

Nonionic emulsifier/solubilizer; low foam, mild, for emulsions, avoid with soaps to prevent precipitationE · AI inference · to be verified

Lysine Carboxymethyl Cysteinate

Amino acid complex for hair waving/straightening; also used as a skin conditioning agent.E · AI inference · to be verified

Dipotassium Glycyrrhizate

Dipotassium glycyrrhizinate for moisturizing/soothing; inhibits 5-LOX, water-soluble, for sensitive skin.E · AI inference · to be verified

Xanthan Gum

Natural thickener at 0.1–1%; provides gel texture, pH-stable, requires full hydrationC · Official source

1,2-Hexanediol

Polyol solvent and preservative booster at 1–5%; light feel, can replace some traditional preservativesC · Official source

Polyglyceryl-10 Diisostearate

Mild non-ionic emulsifier for lotions; low irritancy, no strong sensitization data, concentration depends on formula, suitable for sensitive skin formulas.E · AI inference · to be verified

Citric Acid

Buffer and chelator at 0.1–2%; adjusts pH, may irritate sensitive skin at low pHE · AI inference · to be verified

Polyglyceryl-10 Laurate

Mild non-ionic emulsifier for O/W systems; cetyl ester structure may irritate sensitive skin, use at 0.5-3%.E · AI inference · to be verified

Sodium Citrate

Sodium citrate for buffering and chelating; adjust pH, careful with strong acid reactions.E · AI inference · to be verified

Isostearic Acid

Fatty acid derivative as emulsifier auxiliary and emollient; insoluble, requires homogenization, may feel slightly greasyE · AI inference · to be verified

Parfum/Fragrance

Blended fragrance for odor; contains 26 restricted allergens, use caution in sensitive/child/eye products, verify compliance.E · AI inference · to be verified

Ethylhexylglycerin

Mild conditioner and preservative booster at 0.5–1%; reduces preservative load, smooth feelC · Official source

Potassium Hydroxide

Strong alkali pH adjuster, trace usage (<0.1%); corrosive, must be neutralized.E · AI inference · to be verified

Chlorphenesin

Phenolic antimicrobial; strict EU limits apply, potential allergen, careful dosing required for leave-on products.E · AI inference · to be verified

Phenoxyethanol

Broad-spectrum preservative at ≤1%; may irritate sensitive eye areas, often paired with ethylhexylglycerinC · Official source

Citral

Citral; citrus fragrance component, listed EU allergen, high phototoxicity risk, strict concentration limits apply.E · AI inference · to be verified

Citrus Aurantium Bergamia Peel Oil

Bergamot peel oil with EU limits; furanocoumarin content causes photosensitivity, avoid in AM or stabilizeE · AI inference · to be verified

Citrus Limon Peel Oil

Lemon peel oil for fragrance/skin conditioning; contains allergens, mind phototoxicity and complianceE · AI inference · to be verified

Eucalyptus Globulus Oil

Eucalyptus oil for cooling sensation and fragrance; use low concentration for sensitive skin to avoid irritationE · AI inference · to be verified

Juniperus Virginiana Oil

Virginia juniper oil for fragrance/tonic; contains terpenes, irritant, control concentration.E · AI inference · to be verified

Lavandula Oil

Lavender essential oil for perfuming; contains linalool and geraniol, listed allergens requiring controlled usage.E · AI inference · to be verified

Extract

Unspecified extract with unknown function; requires supplier species ID and certification before useE · AI inference · to be verified

Limonene

Natural fragrance solvent, EU allergen; poor photostabilityC · Official source

Linalool

Natural fragrance component at ≤0.05%; one of EU 26 allergens, caution for sensitive skinE · AI inference · to be verified

Linalyl Acetate

Fragrance component for floral notes; one of EU 26 allergens, limited by III/337E · AI inference · to be verified

Pinene

Essential oil component and defoamer with EU limits; oxidizes to allergens, store protected, use limitedE · AI inference · to be verified

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