tatcha Luminous Deep Hydration Firming Eye 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. Water
2. Glycerin
3. Propanediol
4. PEG-400
5. Squalane
6. Sericin
7. Camellia Sinensis Leaf Extract
8. Origanum Majorana Leaf Extract
9. Panax Ginseng Root Extract
10. Lonicera Japonica Leaf Extract
11. Stearyl Glycyrrhetinate
12. Caffeine
13. Royal Jelly Extract
14. Thymus Serpillum Extract
15. Gold
16. Algae Extract
17. Hydrolyzed Hyaluronic Acid
18. Persea Gratissima Oil
19. Prunus Armeniaca Kernel Oil
20. Rosa Canina Fruit Oil
21. Inositol
22. Helianthus Annuus Seed Oil
23. Hydrogenated Lecithin
24. Sodium Hyaluronate Crosspolymer
25. Glycosyl Trehalose
26. Hydrogenated Starch Hydrolysate
27. Potassium Hydroxide
28. Sodium Dilauramidoglutamide Lysine
29. Natto Gum
30. Xanthan Gum
31. Disodium EDTA
32. Sorbitan Stearate
33. Dimethicone
34. Dipentaerythrityl Hexahydroxystearate
35. Carbomer
36. Mica
37. Tin Oxide
38. Titanium Dioxide
39. Butylene Glycol
40. Pentylene Glycol
41. Sodium Chloride
42. Ethylhexylglycerin
43. Behenyl Alcohol
44. Alcohol
45. Phenoxyethanol

Highlights

Free of parabensFree of sulfatesFree of formaldehyde releasersContains animal-derivedContains fragranceContains essential oilsContains mineral oilContains siliconesContains alcohol

Key ingredients

ANTIPLAQUE

Water

DENATURANT

Glycerin

SOLVENT

Propanediol

SKIN CONDITIONING - EMOLLIENT

SqualanePanax Ginseng Root Extract

ANTISTATIC

Sericin

ANTIMICROBIAL

Camellia Sinensis Leaf Extract

ANTI-SEBUM

Origanum Majorana Leaf Extract

Other ingredients

PEG-400Lonicera Japonica Leaf ExtractStearyl GlycyrrhetinateCaffeineRoyal Jelly ExtractThymus Serpillum ExtractGoldAlgae ExtractHydrolyzed Hyaluronic AcidPersea Gratissima OilPrunus Armeniaca Kernel OilRosa Canina Fruit OilInositolHelianthus Annuus Seed OilHydrogenated LecithinSodium Hyaluronate CrosspolymerGlycosyl TrehaloseHydrogenated Starch HydrolysatePotassium HydroxideSodium Dilauramidoglutamide LysineNatto GumXanthan GumDisodium EDTASorbitan StearateDimethiconeDipentaerythrityl HexahydroxystearateCarbomerMicaTin OxideTitanium DioxideButylene GlycolPentylene GlycolSodium ChlorideEthylhexylglycerinBehenyl AlcoholAlcoholPhenoxyethanol

Skim through

Ingredients explained

Water

Primary solvent and base; requires preservative system to prevent microbial growth

Glycerin

Workhorse humectant at 3–10%; tacky at high levels, pair with occlusives

Propanediol

Polyol solvent at 1–5%; light feel, aids solubilization, propylene glycol alternative

PEG-400

Not decoded yet

Squalane

Emollient from plants or synthetic; light texture

Sericin

Animal-derived silk protein, used for anti-static and hair/skin conditioning; provides smoothness and repair.

Camellia Sinensis Leaf Extract

Green tea extract for antioxidant/astringent; contains caffeine, possible irritation in sensitive skin.

Origanum Majorana Leaf Extract

Oregano leaf extract with thymol/carvacrol; anti-sebum claims, essential oil allergen risk.

Panax Ginseng Root Extract

Botanical extract for skin and hair conditioning; activity and irritation risk vary by source/purity, patch test for sensitive skin

Lonicera Japonica Leaf Extract

Honeysuckle leaf extract; polyphenol-rich; focuses on soothing and antioxidant; common in soothing skincare.

Stearyl Glycyrrhetinate

Glycyrrhizin derivative offering core soothing and anti-inflammatory benefits, plus emollience for reactive skin

Caffeine

Active ingredient, 0.1–2%; promotes circulation, irritation risk at high concentration.

Royal Jelly Extract

Royal jelly extract for skin conditioning; contains animal proteins, contraindicated for bee allergies

Thymus Serpillum Extract

Thymus serpyllum extract, contains active ingredients such as thymol, used as antibacterial and astringent agent; strong irritancy at high concentrations, dosage needs to be controlled.

Gold

Gold in nano or microparticle form, for coloring and slip; usage restricted by regulations

Algae Extract

Algae extract with humectant and conditioning effects; may contain natural fragrant components.

Hydrolyzed Hyaluronic Acid

Low-MW humectant with superior penetration vs high-MW; 0.1-0.5% typical, hygroscopic, store dry to prevent clumping.

Persea Gratissima Oil

Avocado oil rich in fatty acids and vitamin E; occlusive moisturizer, use with caution on oily skin.

Prunus Armeniaca Kernel Oil

Plant oil for emollience and nutrition; contains proteins that may cause sensitivity, use caution in sensitive skin

Rosa Canina Fruit Oil

Rosehip oil, rich in oleic/linoleic acids for emolliency/repair; prone to oxidation, needs protection

Inositol

Humectant at 0.5–2%; gentle moisturizing, suitable for sensitive skin

Helianthus Annuus Seed Oil

Sunflower seed oil for emollient/occlusive; high linoleic acid, low comedogenicity.

Hydrogenated Lecithin

Emulsifier from lecithin; stable, used in powder emulsions

Sodium Hyaluronate Crosspolymer

Crosslinked high-MW HA; forms surface hydrogel for long-lasting hydration, minimal penetration, physical film-forming.

Glycosyl Trehalose

Glycosylated trehalose to enhance skin tolerance and moisture retention; acts as a film former.

Hydrogenated Starch Hydrolysate

Humectant for hydration and film formation; 1-5%, monitor microbial contamination

Potassium Hydroxide

Strong alkali pH adjuster, trace usage (<0.1%); corrosive, must be neutralized.

Sodium Dilauramidoglutamide Lysine

Amino acid-based humectant with moisture-binding properties; low irritancy, improves skin feel and hydration.

Natto Gum

Natto gum, film-forming; 0.1–0.5% typical, low irritation, low sensitization

Xanthan Gum

Natural thickener at 0.1–1%; provides gel texture, pH-stable, requires full hydration

Disodium EDTA

Chelating agent at 0.05–0.5%; sequesters metal ions for stability, boosts preservative efficacy

Sorbitan Stearate

Non-ionic emulsifier for O/W systems; hydrophobic, requires co-emulsifiers, inert at high purity

Dimethicone

Silicone occlusive at 1–5%; provides smooth feel, non-penetrating, suitable for sensitive skin

Dipentaerythrityl Hexahydroxystearate

Fatty alcohol ester for emulsification and conditioning; high molecular weight.

Carbomer

Gelling thickener requiring neutralization; watch out for ion compatibility

Mica

Mineral colorant for pearlescence; heavy metal screening required

Tin Oxide

Inorganic mineral pigment providing opacity and suspension; requires skin safety assessment, typically used in sunscreens or powder colorants.

Titanium Dioxide

Physical UV filter and colorant up to 25%; nano form requires attention

Butylene Glycol

Polyol humectant and solvent at 1–5%; aids solubilization, light feel

Pentylene Glycol

Polyol humectant at 1-3%; low irritancy, suitable for sensitive skin

Sodium Chloride

Salt for gel viscosity control; used as precipitant in soaps

Ethylhexylglycerin

Mild conditioner and preservative booster at 0.5–1%; reduces preservative load, smooth feel

Behenyl Alcohol

Fat alcohol emulsifier/thickener at 1-3%; low comedogenic risk, check solubility in strong acid/base systems, add antioxidants.

Alcohol

Ethanol for solubility/drying at 5-15%; high conc. is drying/irritating, avoid lip/eye, low residue, balance with humectants.

Phenoxyethanol

Broad-spectrum preservative at ≤1%; may irritate sensitive eye areas, often paired with ethylhexylglycerin

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