The Ordinary Caffeine Solution 5% + EGCG Eye Serum

Serum~€10typical, July 2026

Our read, in one look

Caffeine is the reason to consider this serum, with Lactic acid behind it.

The case for it

  • Caffeine, moderate evidence for antioxidant
  • Lactic acid, moderate evidence for hydration
  • No fragrance, alcohol, silicones or parabens

Mind this

  • Sunscreen the next day, acids leave skin more sun-sensitive
  • Add it on its own for a week or two, so you know what your skin is answering to
Best for dry, dehydrated, normal, combo skinFind it on amazon.com
Maya's read

The Ordinary Caffeine Solution 5% + EGCG Eye Serum is a serum built around Glycerin, Hyaluronic acid and Lactic acid. It leans strongest on hydration, barrier repair. Best suited to dry, dehydrated and normal skin. Go slow: the active is potent enough to irritate if overused.

Skip it if your barrier is already sensitised or compromised: the acids can sting broken or over-exfoliated skin.

The formula, drawn

Every ingredient in label order, coloured by the job it does here.

14 of the 25 sit above the 1% line. The other 11, hatched, are each under 1%. Widths show the ORDER on the label and nothing else: the label never discloses amounts, so we never draw them.

  • Actives & signals
  • Hydrators
  • Texture & base
  • Preservation
  • Not in our library yet
  • No fragrance anywhere on the label

What it delivers

Hydration10
Barrier repair7
Brightening / tone4
Oil-control & blemishes3
Anti-aging5

How it feels A light, fast-absorbing texture that layers cleanly under the rest of your routine, with no greasy film. (estimated from the formula)

What's in it that matters

The molecule doing the workGlycerinHumectant · strong evidence

Classic humectant with strong evidence for improving skin hydration and supporting barrier when combined with emollients.

  • Hyaluronic acidHumectantstrong evidence

    Water-binding molecule that increases hydration; works best under occlusive/emollient layers to reduce evaporation.

  • Lactic acidSupporting Activemoderate evidence

    AHA that provides gentle exfoliation and some humectant effect; generally milder than glycolic but still pH-dependent and potentially irritating.

  • CaffeineSupporting Activemoderate evidence

    Stimulant molecule that can mildly reduce puffiness and vascular dark circles by improving microcirculation and exerting antioxidant effects around the eye area.

  • EGCG glucosideSupporting Activelimited evidence

    A water-soluble, sugar-stabilised form of EGCG, the main green tea polyphenol. It is in a formula as antioxidant support, not as the ingredient doing the heavy lifting.

  • Pentylene GlycolHumectantmoderate evidence

    Short chain diol that works as a light humectant, co solvent and preservative booster. It keeps a formula less sticky and microbially stable while hydrating the outer layers.

How to use it

In the evening, and not every night: 2–3 times a week is plenty. Follow with a moisturiser, and wear sunscreen the next day.

Keep it away from

  • Retinoids (retinol, tretinoin)
  • Benzoyl peroxide
  • Other exfoliating acids the same night
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Where it acts

The same cross-section as our 500 dalton page, with this formula's actives on the layer each one works on. Depth is the anatomy's, never an ingredient's.

4 of this product's actives have a layer we can defend. 2 did not, so they are not on the diagram: no source and no honest derivation means no dot.

Against the average serum

HydrationBarrier repairBrighteningOil-controlAnti-aging
This productMedian serum (17 in catalogue)

It scores lower than the median serum on brightening and anti-aging.

On hydration, barrier repair and oil control it is level with the median, so that is not what sets it apart.

A median, not an average: one unusual formula should not move the middle. The numbers are the same 0 to 10 reads the comparison pages use.

The full ingredients list, decoded

Every ingredient on the label, in the order it appears (highest amount first). We link the 15 our library knows, name what each one does, and flag anything that can irritate or clog. The rest we leave plain, nothing is hidden.

All 25 ingredients, decoded
  1. Aqua (Water)Solvent (base)
  2. CaffeineXanthine
    mild irritant
  3. Maltodextrin
  4. GlycerinHumectant
  5. PropanediolHumectant
  6. Gallyl Glucoside
  7. Oxidized Glutathione
  8. Melanin
  9. Glycine Soja (Soybean) Seed ExtractAmino acid (NMF)
  10. HydroxyethylcelluloseThickener
  11. Polyacrylate Crosspolymer-6Thickener
  12. roughly the 1% lineThe rules only require descending order above 1%. From Xanthan gum down, these 11 can be listed in any order the brand likes, so position stops telling you anything.
  13. Xanthan gumThickener
  14. Lactic AcidExfoliant
    mild irritant
  15. Dehydroacetic AcidPreservative
  16. Trisodium Ethylenediamine DisuccinateChelator (stabiliser)
  17. Propyl Gallate
  18. Benzyl AlcoholPreservative
    mild irritant
  19. 1,2-HexanediolPreservative booster
  20. EthylhexylglycerinPreservative booster
  21. PhenoxyethanolPreservative
    mild irritant
  22. Caprylyl GlycolPreservative booster

Worth knowing: Lactic acid sits below that line. It is in there, and the label does not tell you how much. That is not the same as saying it is too little to matter.

Copy the raw INCI list

Aqua (Water), Caffeine, Maltodextrin, Glycerin, Propanediol, Epigallocatechin Gallatyl Glucoside, Gallyl Glucoside, Hyaluronic Acid, Oxidized Glutathione, Melanin, Glycine Soja (Soybean) Seed Extract, Pentylene Glycol, Hydroxyethylcellulose, Polyacrylate Crosspolymer-6, Xanthan gum, Lactic Acid, Dehydroacetic Acid, Trisodium Ethylenediamine Disuccinate, Propyl Gallate, Dimethyl Isosorbide, Benzyl Alcohol, 1,2-Hexanediol, Ethylhexylglycerin, Phenoxyethanol, Caprylyl Glycol

Read enough? Find it on amazon.com

We don't make or sell skincare of our own. So there's nothing here we're trying to push, just an honest read of whether this formula suits your skin.

Compare it with…

All 15 comparisons

Common questions

Is The Ordinary Caffeine Solution 5% + EGCG Eye Serum good for dry skin?

By our read of the formula, it suits dry, dehydrated, normal skin. The Ordinary Caffeine Solution 5% + EGCG Eye Serum is a serum built around Glycerin, Hyaluronic acid and Lactic acid. It leans strongest on hydration, barrier repair. Best suited to dry, dehydrated and normal skin. Go slow: the active is potent enough to irritate if overused.

How do you use The Ordinary Caffeine Solution 5% + EGCG Eye Serum?

In the evening, and not every night: 2–3 times a week is plenty. Follow with a moisturiser, and wear sunscreen the next day.

What are the key ingredients in The Ordinary Caffeine Solution 5% + EGCG Eye Serum?

The actives that do the work are Glycerin, Hyaluronic acid, Lactic acid, Caffeine, EGCG glucoside, Pentylene Glycol. The rest of the list is texture, preservatives and emulsifiers that hold the formula together.

Does The Ordinary Caffeine Solution 5% + EGCG Eye Serum contain fragrance?

No. By our reading of the ingredient list it is fragrance-free, which is a plus for sensitive or reactive skin.

What the 3D scene shows

The scene shows The Ordinary Caffeine Solution 5% + EGCG Eye Serum beside a cross-section of skin, with 3 of its ingredients drawn at the layer each one acts on and at one shared molecular scale: Glycerin and Lactic acid and Pentylene Glycol in the stratum corneum, the dead outer layer where most skincare works. Depths come from the same sourced layer data as the rest of this site, and any ingredient whose layer is not established is left out rather than guessed.

The Ordinary prints: 5% caffeine. Read on the brand's own product page, 2026-08-10.

Chemical structure of Glycerin
Building the scene…

This is skin, in section.

The molecules floating inside it are from this bottle, each at the layer it works on, drawn to one true scale. Drag to turn, pinch or scroll to zoom, tap a molecule for its evidence.

Skin in section· molecules from this formula · one true scale
tap it to decode ↻
Caffeine Solution 5% + EGCG Eye SerumThe Ordinary · Serum · ~€10

Caffeine is the reason to consider this serum, with Lactic acid behind it.

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