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The Ordinary Alpha Arbutin 2% + HA serum bottle and box
The Ordinary

Alpha Arbutin 2% + HA

Brightening Serum 30 ml
9.1OUT OF 10
Great formula

Formula has a high safety profile. Suitable for most skin types.

12
Safe
0
Caution
0
Higher risk

Score breakdown

Safety10/10
Barrier support10/10
Acne-safe10/10
Active treatment1.4/10

Our verdict

Alpha Arbutin 2% + HA is one of the gentlest credible routes into treating dark spots, and its short ingredient list is the point. Alpha arbutin is a stabilised derivative of hydroquinone that releases its brightening activity slowly, inhibiting tyrosinase — the enzyme behind excess melanin — without the irritation, sensitisation or rebound risk that makes hydroquinone a short-course-only option. At 2% it sits at the concentration most studies use, and hydrolysed sodium hyaluronate rounds it out with light hydration so the serum feels comfortable under moisturizer. The realistic framing matters: this is a slow, steady performer, not a corrector. Expect gradual fading of post-acne marks and mild sun spots over 8–12 weeks of daily use, and only if you are rigorous about sunscreen — without it, new pigment forms faster than arbutin can prevent it. Deep melasma will not respond to this alone. For sensitive skin, darker skin tones, or anyone who wants a low-risk brightener that pairs safely with almost anything, it is excellent value.

At a glance

What it does
hydrationbarrier supportbrightening
Best for
sensitive skinacne-prone skindry and dehydrated skinmost skin types
Not enough for
active anti-aging treatment

Key ingredients

Alpha-Arbutinsupports skin comfortLactic Acidsupports skin comfort

Full ingredient list (12)

Aqua/waterAlpha-ArbutinPolyacrylate Crosspolymer-6Hydrolyzed Sodium HyaluronatePropanediolPPG-26-Buteth-26PEG-40 Hydrogenated Castor OilLactic AcidTrisodium Ethylenediamine DisuccinateEthoxydiglycolPhenoxyethanolChlorphenesin

Colour indicates our safety assessment for each ingredient — green is well-tolerated, amber warrants caution, red is higher-risk. Tap any ingredient to read its full profile.

Frequently asked

How long does alpha arbutin take to fade dark spots?
Expect 8–12 weeks of consistent daily use before you see meaningful fading, and longer for older or deeper pigmentation. Alpha arbutin works gradually by preventing new melanin rather than bleaching existing pigment, so patience and daily sunscreen matter more than anything else.
Is alpha arbutin safer than hydroquinone?
Yes, in practical terms. Alpha arbutin releases its brightening activity slowly, which means far less irritation and no need for the on-off cycling hydroquinone requires. It is gentler and suitable for long-term use, but correspondingly slower and less powerful.
Can I use it with vitamin C or niacinamide?
Yes — it layers well with both, and the combination targets pigment through different pathways. A common routine is vitamin C in the morning, alpha arbutin morning or night, and niacinamide alongside either. Introduce them one at a time if your skin is reactive.
What is the score based on?
The score comes from the same Pure Moonlight ingredient analyzer used across the whole site. It weighs safety, barrier support, acne and comedogenic risk, and active-ingredient strength, so this product's score is directly comparable to any ingredient page here.

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