Pruebe esto primero
The Ordinary Salicylic Acid 2% Solution
El precio unitario canadiense verificado más bajo y el único de los tres con licencia de Health Canada.
Mismo ácido al 2 % · solo uno tiene número de licencia canadiense
Tres exfoliantes sin enjuague con ácido salicílico al 2 %
Qué le ofrece esta página: Si el frasco famoso vale la diferencia de precio y cuál está autorizado para la venta en Canadá.
La respuesta corta
Qué hacer después
The INKEY List añade un 1 % de ácido hialurónico y Paula’s Choice viene en un frasco mucho más grande. No se ha demostrado que ninguno funcione mejor.
Lo que esta página no puede decirle
Los tres usan el formato sin aclarado al 2 %, el más cercano a la evidencia del ingrediente, pero esa evidencia es escasa.
Los tres productos
Los precios son una observación fechada, no una oferta vigente.
El más barato · licencia de Health Canada
The Ordinary Salicylic Acid 2% Solution
$29.00 por 100 mLsalicylic acid 2% · 30 mL bottle
Ver la verificación de la fórmula (en inglés)
Leímos la lista de ingredientes del envase de este mercado · comprobado el 2026-08-23
Licensed by Health Canada; label says ages 12+ and patch-test first.
Frasco más grande · sin registro canadiense
Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant
$44.07 por 100 mLsalicylic acid 2% · 118 mL bottle
Ver la verificación de la fórmula (en inglés)
Solo encontramos la lista de ingredientes en otro país. El envase de este mercado puede diferir · comprobado el 2026-08-23
The price observation is Sephora Canada's Canadian-dollar shelf price. Maintained ClinicalTrials.gov and PubMed searches through Aug 22, 2026 identified no exact-product comparative acne result.
Añade 1 % de ácido hialurónico
The INKEY List Beta Hydroxy Acid Serum
$63.33 por 100 mLsalicylic acid 2% · 30 mL bottle
Ver la verificación de la fórmula (en inglés)
Leímos la lista de ingredientes del envase de este mercado · comprobado el 2026-08-23
The official formula states 2% salicylic acid and 1% hyaluronic acid. Maintained ClinicalTrials.gov and PubMed searches through Aug 22, 2026 identified no exact-product comparative result.
Qué cambiaThe Ordinary is licensed by Health Canada and has the lowest verified Canadian unit price. Paula's Choice and The INKEY List are both sold at Canadian-dollar shelf prices; Paula's Choice has no Canadian registry record, while The INKEY List adds 1% hyaluronic acid.
Las verificaciones, lado a lado
One question per row. The green check marks that row's better answer — there is no overall winner.
| Verificación | The OrdinarySalicylic Acid 2% Solution | Paula's Choice2% BHA Liquid Exfoliant | The INKEY ListBeta Hydroxy Acid Serum |
|---|---|---|---|
| Licensed in Canada?Health Canada's licence database · Aug 20, 2026 | Mejor respuesta de esta fila.Yes — licence 80115716ages 12+, patch-test first, per the product label | No record foundsold as a cosmetic — no licence needed | No record foundsold as a cosmetic — no licence needed |
| Our experiencepersonal notes, not results — see What we use | —we haven't used this one | Just startedtoo early to tell | —we haven't used this one |
Todo lo anterior en detalle: las verificaciones lado a lado, lo que halló cada estudio, lo que dicen las etiquetas y nuestras fuentes.
La evidencia detallada que sigue está escrita en inglés.
Por qué esta respuesta
Resumen de la comparación
Is the famous one worth the price gap?
All three use 2% leave-on salicylic acid — the format closest to the ingredient evidence, though that evidence is thin. At the checked Canadian prices, The Ordinary costs less per millilitre than either alternative. The INKEY List adds hyaluronic acid, but that does not prove better results. We've just started the Paula's Choice — too early to judge it.
Qué coincide
All three are fragrance-free, leave-on 2% salicylic acid liquids — the format closer to how the ingredient was studied.
Qué cambia
The Ordinary is licensed by Health Canada and has the lowest verified Canadian unit price. Paula's Choice and The INKEY List are both sold at Canadian-dollar shelf prices; Paula's Choice has no Canadian registry record, while The INKEY List adds 1% hyaluronic acid.
Límite de la evidencia
Evidence on this page supports the ingredient, product type, or prevention step. It doesn't prove any one of these exact products is better.
Lo que los estudios encontraron de verdad
A Canadian licence, a familiar name, or an extra hydrating ingredient is not a treatment result. The maintained ClinicalTrials.gov and PubMed searches identified no comparative result showing that one of these exact formulas works better than the others.
—Licensed for sale, but our search found no study of it
The Ordinary Salicylic Acid 2% Solution
The maintained ClinicalTrials.gov and PubMed searches returned no record naming this solution. A scan of 1,040 ClinicalTrials.gov records returned for the brand name identified no product from The Ordinary. The Health Canada licence number is a regulatory record about labelling and safety rules; it says nothing about whether the product changes blackheads.
Salvedad: The searches cover one trial registry and one literature index, so a study registered only in another country would not appear.
—Well known, but our search found no published study
Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant
The maintained searches for the full product name, for "Skin Perfecting 2% BHA", for the brand, and for its founder returned no matching record in ClinicalTrials.gov or PubMed. It is widely discussed, but that standing comes from reviews and repetition rather than from a measured finished-product result.
Salvedad: A null result in these two sources is not evidence about private tests or records filed under a different formula name.
—The ingredient list is public, but our search found no trial of this product
The INKEY List Beta Hydroxy Acid Serum
The official product page supports the stated 2% salicylic acid and 1% hyaluronic acid formula. It does not provide a controlled comparison showing that this serum clears blackheads better than another 2% leave-on product.
Salvedad: The ingredient and format have limited acne evidence. That evidence cannot be assigned to this finished serum without an exact-product study.
Checked August 22, 2026: none of the three exact formulas has a comparative result in the maintained sources. The salicylic acid evidence elsewhere on this page is about the ingredient and leave-on format, not a verdict that one bottle is more effective.
Cómo buscamos estudios sobre estos productos exactos
Última búsqueda:
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.
Lo que esto no le dice: 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.
Notas y fuentes
- The evidence for leave-on 2% salicylic acid is the same thin base as the CeraVe gel-versus-cleanser check on this page: a weak 2024 AAD guideline recommendation on low-quality evidence, and no pooled estimate in the 2020 Cochrane review.
- The Ordinary's $29.00 per 100 mL is its Canadian brand-store price ($8.70 per 30 mL). The walmart.ca listing is a third-party import of the US-labelled version at about a 25% markup — the Canadian licence applies to the Canadian-labelled pack.
- Paula's Choice was CA$52.00 for 118 mL at Sephora Canada on Aug 22, 2026. No licence number of any kind was found for this product in Health Canada's database on Aug 20, 2026 — that's about its cosmetic regulatory category, not proof of safety or efficacy. Health Canada's database also showed two earlier Paula's Choice 2% salicylic solutions marked discontinued.
- The INKEY List price is Sephora Canada's current listed price ($19.00 for 30 mL, checked Aug 22, 2026). Its official formula page states 2% salicylic acid and 1% hyaluronic acid. That extra ingredient changes the formula; it is not evidence of better blackhead results.
- Our experience note is one person's early impression, not a result.
- ClinicalTrials.gov and PubMed searches through Aug 22, 2026 identified no head-to-head study of these exact products.
Después de la evidencia
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