The Ordinary Alpha Arbutin 2% + HA

Serum~€9typical, July 2026

Our read, in one look

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

The case for it

  • Alpha Arbutin, moderate evidence for tone and pigment
  • 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 pigmentation, melasma, postinflammatory hyperpigmentation, normal skinFind it on amazon.com
Maya's read

The Ordinary Alpha Arbutin 2% + HA is a serum built around Alpha Arbutin and Lactic acid. It leans strongest on hydration, brightening / tone. Best suited to pigmentation, melasma and postinflammatory hyperpigmentation 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.

What it delivers

Hydration7
Barrier repair3
Brightening / tone9
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 workAlpha ArbutinActive|Hero Active · moderate evidence

Tyrosinase inhibiting brightener that reduces melasma and dark spots with fewer adverse effects than hydroquinone but can still irritate sensitive or compromised skin.

  • Lactic acidSupporting Activemoderate evidence

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

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.

2 of this product's actives have a layer we can defend.

Sources for the sourced ones: Ebanks et al. 2009: mechanisms regulating skin pigmentation.

Against the average serum

HydrationBarrier repairBrighteningOil-controlAnti-aging
This productMedian serum (32 in catalogue)

It scores higher than the median serum on brightening.

It gives up ground on barrier repair and hydration.

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 7 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 12 ingredients, decoded
  1. Aqua (Water)Solvent (base)
  2. Alpha-ArbutinPhenolic derivative
    mild irritant
  3. Polyacrylate Crosspolymer-6Thickener
  4. Hydrolyzed Sodium Hyaluronate
  5. PropanediolHumectant
  6. PPG-26-Buteth-26
  7. PEG-40 Hydrogenated Castor OilEmulsifier
  8. Lactic AcidExfoliant
    mild irritant
  9. PhenoxyethanolPreservative
    mild irritant
  10. ChlorphenesinPreservative
Copy the raw INCI list

Aqua (Water), Alpha-Arbutin, Polyacrylate Crosspolymer-6, Hydrolyzed Sodium Hyaluronate, Propanediol, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Lactic Acid, Trisodium Ethylenediamine Disuccinate, Ethoxydiglycol, Phenoxyethanol, Chlorphenesin

Worried about clogged pores specifically? The pore-clogging checker reads this same list against the published comedogenic ratings.

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

Decode your product

Photograph the front and the ingredients list on the back. A person reads the queue weekly and checks your product against the same knowledge base as everything else on the site, so this takes days, not seconds.

The photos

Common questions

Is The Ordinary Alpha Arbutin 2% + HA good for pigmentation skin?

By our read of the formula, it suits pigmentation, melasma, postinflammatory hyperpigmentation skin. The Ordinary Alpha Arbutin 2% + HA is a serum built around Alpha Arbutin and Lactic acid. It leans strongest on hydration, brightening / tone. Best suited to pigmentation, melasma and postinflammatory hyperpigmentation skin. Go slow: the active is potent enough to irritate if overused.

How do you use The Ordinary Alpha Arbutin 2% + HA?

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 Alpha Arbutin 2% + HA?

The actives that do the work are Alpha Arbutin, Lactic acid. The rest of the list is texture, preservatives and emulsifiers that hold the formula together.

Does The Ordinary Alpha Arbutin 2% + HA 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 Alpha Arbutin 2% + HA beside a cross-section of skin, with 2 of its ingredients drawn at the layer each one acts on and at one shared molecular scale: Lactic acid in the stratum corneum, the dead outer layer where most skincare works; Alpha Arbutin in the living epidermis, among the cells that are still dividing. 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.

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 ↻
Alpha Arbutin 2% + HAThe Ordinary · Serum · ~€9

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

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