A comparison in four questions
Open the question.
See the differences.
Four products with different formats and treatment roles. Sources checked September 26, 2026; prices are snapshots of the stated purchase.
CoreAge Rx appears first in every section through sponsored placement. The order does not establish better clinical results. Read the disclosure ↗
What exactly is the product?
CoreAge Rx Pore Favor
Pore Favor: a compounded prescription cream with salicylic acid, zinc oxide, niacinamide and urea. Individual strengths were not established.
Full review ↗Differin Adapalene Gel
Differin: an OTC gel containing 0.1% adapalene, a retinoid for acne. Other Differin products are separate.
Full review ↗Paula’s Choice 2% BHA
Skin Perfecting 2% BHA Liquid Exfoliant: a leave-on liquid. It is not a cream or rinse-off cleanser.
Full review ↗La Roche-Posay Effaclar BPO
Effaclar BPO Multi-Target: 5.5% benzoyl peroxide. This is not the discontinued Effaclar Duo or the salicylic-acid Multi-Target product.
Full review ↗What does the offer cost?
CoreAge Rx Pore Favor
Starting $42/month. Free delivery and no membership fees are provider claims. Confirm quantity, final total and renewal terms.
Full review ↗Differin Adapalene Gel
Direct retail price not established. The manufacturer lists several 15 g and 45 g packages; confirm the selected seller and size.
Full review ↗Paula’s Choice 2% BHA
$37 for 4 fl. oz. as a one-time purchase. $31.45 is the separate subscription offer; confirm delivery interval and current terms.
Full review ↗La Roche-Posay Effaclar BPO
$24.99 for the selected 20 mL size in accessible official-page text. Direct access was blocked; verify the current cart and shipping.
Full review ↗What does the evidence establish?
CoreAge Rx Pore Favor
An advertised provider-led process and disclosed ingredient names. A comparative trial of the complete formula was not established. Compounded drugs are not FDA-approved.
Full review ↗Differin Adapalene Gel
A defined OTC acne medication and a specific FDA approval history. That does not establish permanent pore erasure or suitability for every reader.
Full review ↗Paula’s Choice 2% BHA
Manufacturer study footnotes for selected outcomes. Full protocols and an independent comparison against the other offers were not appraised.
Full review ↗La Roche-Posay Effaclar BPO
Manufacturer clinical and consumer summaries with qualifications, including a subgroup versus average distinction. These are not a universal promise of results.
Full review ↗What still needs checking?
CoreAge Rx Pore Favor
Complete formula and strengths, dispensing quantity, eligibility, final price, support route and instructions from the prescriber.
Full review ↗Differin Adapalene Gel
The exact current package and leaflet, whether the concern is acne, retailer terms and compatibility with the existing routine.
Full review ↗Paula’s Choice 2% BHA
The exact liquid format, purchase type, full ingredient list and how an exfoliant fits with existing skin care.
Full review ↗La Roche-Posay Effaclar BPO
The current product name and size, full warnings, live offer and the practical possibility of irritation or fabric bleaching.
Full review ↗For citations, warnings and the complete context, open each review. The shortlist explains how these offers were selected.