Paula's Choice

Clinical Azelaic Acid Booster

TreatmentPremiumMorning or evening
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A 10% azelaic acid booster with salicylic acid and adenosine, mixable into moisturiser, for redness, bumps and tone. A cosmetically elegant azelaic option; the dual-acid combination is effective but worth easing into.
The verdict

What this is good for

✓ Great forRednessPost-Acne MarksCongestion
The formulation

Ingredient stack

Each ingredient is listed in descending concentration. Above the 1% line the order is regulated — below it, brands can list in any order.

Ingredients above the dashed gold line are dosed above 1% (the regulatory threshold) — these are what the formulation is really built on. Percentages are positional estimates from INCI order unless a brand discloses them.

~50–80%Aqua
~5–25%Azelaic Acid
~3–10%Dimethicone
~2–6%Glycerin
~1.5–4%Salicylic Acid
~1–2%2 ingredients
≤ 1% each3 more ingredients below 1%
position-estimated %1% regulatory line
Hero actives

What's actually doing the work

Azelaic Acid
Azelaic Acid
Acid
A dicarboxylic acid that calms redness, clears bumps and fades post-inflammatory marks while being gentle enough for rosacea and sensitive skin. Works without the irritation of many retinoids.
Full glossary entry →
Salicylic Acid
BHA
Acid
An oil-soluble BHA that exfoliates inside the pore, dissolving the sebum and dead-cell plugs behind blackheads and congestion. Anti-inflammatory and especially suited to oily, acne-prone skin.
Full glossary entry →
Adenosine
Soothing Nucleoside
Neutral
A key active in this formula. See the glossary for the full breakdown of how Adenosine works, the evidence behind it, and how to use it.
Full glossary entry →
When to use

Routine placement

Morning or evening
Cheaper alternatives

Looking for a dupe?

The closest active-matched alternative is the The Ordinary Azelaic Acid Suspension 10% (70% active overlap). We found 5 options that share this product’s hero actives.

Dupe guide
See all treatment dupes for this product
Ranked by ingredient overlap, with an honest note on what’s different in each.
Related products

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The Ordinary
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Next steps

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Skin Stacker is independent and receives no payment from any brand. Ingredient analysis is based on publicly disclosed INCI lists and the peer-reviewed literature. Percentages are positional estimates from INCI order unless a brand discloses them. Formulations change — always re-check the label on your specific batch before using.