À essayer en premier
The Ordinary Azelaic Acid Suspension 10%
Le prix le plus bas des trois, avec la même teneur déclarée de 10 % d’acide azélaïque.
Même ingrédient · trois formules
Trois soins à 10 % d’acide azélaïque
Ce que cette page vous apporte: Ce que l’écart de prix achète à concentration égale de 10 %, et où en sont réellement les preuves sur l’acide azélaïque.
La réponse courte
Que faire ensuite
Paula’s Choice ajoute 0,5 % d’acide salicylique au prix le plus élevé. C’est une différence de formule, pas un meilleur résultat démontré.
Ce que cette page ne peut pas vous dire
Les essais les plus solides sur la rosacée utilisaient 15 % à 20 % d’acide azélaïque, au-dessus de ces trois formules cosmétiques.
Les trois produits
Les prix sont une observation datée, pas une offre en cours.
Prix le plus bas · base matifiante
The Ordinary Azelaic Acid Suspension 10%
$52.67 par 100 mLazelaic acid 10% · 30 mL tube
Voir la vérification de la formule (en anglais)
Nous avons lu la liste d’ingrédients du flacon vendu sur ce marché · vérifié le 2026-08-23
Fragrance-free per the published list; dries to a matte, primer-like finish.
Prix le plus élevé · ajoute 0,5 % d’acide salicylique
Paula's Choice 10% Azelaic Acid Booster
$193.33 par 100 mLazelaic 10% + salicylic 0.5% · 30 mL tube
Voir la vérification de la formule (en anglais)
Nous n’avons trouvé la liste d’ingrédients que dans un autre pays. Le flacon vendu ici peut différer · vérifié le 2026-08-23
Sold via the brand's official amazon.ca storefront; no Canadian brand store exists.
Prix moyen · sérum pour les rougeurs visibles
The INKEY List 10% Azelaic Acid Serum
$90.00 par 100 mLazelaic acid 10% · 30 mL tube
Voir la vérification de la formule (en anglais)
Nous avons lu la liste d’ingrédients du flacon vendu sur ce marché · vérifié le 2026-08-23
The formula strength, package and Canadian price are published. The brand's short consumer-perception claim is manufacturer evidence and is not used to rank effectiveness.
Source de la formule ou de l’étiquette ↗Source de l’allégation ↗
Ce qui diffèrePaula's Choice adds 0.5% salicylic acid and is the highest-priced option; The Ordinary has a matte silicone base; The INKEY List is a serum positioned for visible redness.
Les vérifications, côte à côte
One question per row. The green check marks that row's better answer — there is no overall winner.
| Vérification | The OrdinaryAzelaic Acid Suspension 10% | Paula's Choice10% Azelaic Acid Booster | The INKEY List10% Azelaic Acid Serum |
|---|---|---|---|
| What's declared insidefrom the ingredient lists | Azelaic acid 10%silicone base, matte finish | 10% + salicylic acid 0.5%lighter lotion feel | Azelaic acid 10%serum positioned for visible redness |
| Our experiencepersonal notes, not results — see What we use | Current pickin the routine since mid-2025 | We liked itwe stopped over price, 2022–2025 | Not used by usincluded for its clear formula and current Canadian price |
Tout ce qui précède en détail : les vérifications côte à côte, les résultats de chaque étude, les étiquettes et nos sources.
Les preuves détaillées ci-dessous sont rédigées en anglais.
Pourquoi cette réponse
Aperçu de la comparaison
What does the price gap buy?
All three state 10% azelaic acid. The Ordinary is the lowest-priced option, The INKEY List sits in the middle, and Paula's Choice adds 0.5% salicylic acid at the highest price. Evidence supports azelaic acid for acne, but the strongest rosacea trials used 15–20%, above these cosmetic formulas.
Ce qui correspond
All three are leave-on 10% azelaic acid treatments in 30 mL packages with current ingredient and price records.
Ce qui diffère
Paula's Choice adds 0.5% salicylic acid and is the highest-priced option; The Ordinary has a matte silicone base; The INKEY List is a serum positioned for visible redness.
Limite des preuves
Evidence on this page supports the ingredient, product type, or prevention step. It doesn't prove any one of these exact products is better.
Ce que les études ont réellement trouvé
All three publish 10% azelaic acid and current price data. The INKEY List reports two small exact-product tests; neither provides a controlled comparison or enough public methods to rank it against the other formulas.
—Our search found no study of this product or this brand
The Ordinary Azelaic Acid Suspension 10%
The maintained ClinicalTrials.gov and PubMed searches returned no record naming this suspension or another product from The Ordinary. The parent company, Deciem, appears in PubMed only in author disclosure lines — fees for content creation and a grant for a sponsored conference, declared in a JAMA Dermatology paper on benzene in benzoyl peroxide products (PMID 39937513). That is a record of funding, not of testing.
Réserve : The check covers ClinicalTrials.gov and PubMed; a study registered only outside the United States would not show up in either.
—Our search found no study of this exact product
Paula's Choice 10% Azelaic Acid Booster
The maintained ClinicalTrials.gov and PubMed searches returned no record naming this booster, another Paula's Choice product, or the brand's founder. They also identified no test of this exact 10% azelaic acid and 0.5% salicylic acid combination, and no measurement comparing its higher price with the cheaper tube, through August 23, 2026.
Réserve : Registry and PubMed searches match product and brand names, so a study that referred to the formula only by an internal code would be missed.
✓Two small tests of 22 people each, and the methods were limited
The INKEY List 10% Azelaic Acid Serum
The current product page reports a four-day independent compatibility study under dermatological control in 22 people with rosacea-prone skin and a separate four-week independent consumer trial in 22 people. The page says the serum visibly minimized redness in four days, but it does not publish a comparison group, protocol, raw outcomes, statistical analysis, or enough detail to reproduce either test.
Réserve : These are manufacturer-reported summaries of exact-product testing, not independently published controlled evidence. They do not establish how much of any change came from the serum or whether it outperforms either alternative.
ClinicalTrials.gov, PubMed, and the current product pages were checked through August 23, 2026. The INKEY List reports two small exact-product tests, but the maintained sources identified no independent controlled trial ranking these three finished products. Most treatment evidence for azelaic acid comes from other strengths and formulas; price does not change that evidence ranking.
Comment nous avons cherché des études sur ces produits précis
Dernière recherche :
For each evidence row, search the quoted evidence-row product name, then the quoted brand plus the distinctive product-name tokens. A brand-wide statement additionally requires a quoted brand-name search. Formula codes are added only when an official or study source discloses them.
- ClinicalTrials.gov: Registered studies returned by exact product-name, brand-plus-product-name, and disclosed internal formula-code searches.
- PubMed: Indexed records returned by exact product-name and brand-plus-distinctive-product-token searches.
Ce que cela ne vous dit pas : A negative maintained search is a dated coverage statement, not proof that no study exists in another database, language, registry, sponsor archive, unpublished report, or differently named formula.
Notes et sources
- Azelaic acid has real acne evidence: the 2024 American Academy of Dermatology guideline conditionally recommends it (moderate certainty). The 2020 Cochrane review found it probably works less well than benzoyl peroxide and about the same as tretinoin (both moderate-quality evidence).
- For rosacea redness and bumps the evidence is high-certainty — but at prescription strengths of 15–20%. These 10% cosmetic products sit below the studied strengths, with no equivalent trials at 10%.
- Our acne evidence index tracks 3 registered azelaic-acid studies (1 with posted results); ClinicalTrials.gov lists 11 interventional azelaic-acne trials as of Aug 20, 2026.
- The Paula's Choice price is from its official storefront on amazon.ca — the brand no longer runs a Canadian store, and its own site bills in US dollars. No Canadian licence record was found for any product in this checked set (database searches through Aug 22, 2026); all are sold as cosmetics, which need none — that is about paperwork, not safety.
- Our experience notes are two people's impressions, not trial results.
- The INKEY List publishes a short manufacturer perception result, but methods and a comparison group are not reported; it is not equivalent to an independent controlled trial.
- ClinicalTrials.gov, PubMed, and current product pages checked through Aug 23, 2026 identified no independent head-to-head study of these exact products.
Après les preuves
Voir les prix actuels sur Amazon
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