A container price covers the container
The current US Effaclar page displays $24.99 for 40 mL. That is a retail product quote, not a diagnosis, follow-up visit or guaranteed treatment duration. Differin pricing also depends on retailer and pack size.[source][source]
Avoid inventing a monthly use rate to make the table look uniform. A product can be compared honestly while its individual duration remains unestimated.
A monthly equivalent may be billed in a larger amount
Musely advertises The Acne Cream at $30 per month for a two-month supply. The product-period arithmetic is $60 before applicable additional charges. Confirm the actual initial invoice and renewal arrangement.[source]
The important number is the amount committed over the selected period, not only the smallest figure in the advertisement.
Promotional shipping is not continuing treatment cost
Curology lists a $29.95 monthly subscription and a $34.95 one-time option alongside an introductory offer charging $5.45 shipping and handling. Those are distinct purchase conditions.[source]
Ask when ordinary billing starts and whether routine products have been added. The second shipment is often more useful for budgeting than the first-box promotion.
Read the terms behind a starting price
CoreAge Rx displays Pore Favor from $42 per month. Its catalog also discusses multi-month plans and a consultation-fee deduction when prescribing is declined. Ask for the selected quantity, payment term and total upfront charge.[source][source]
A no-membership-fee statement should not be interpreted as eliminating every possible clinical or cancellation-related term.
Compare what you need, not an isolated number
If clinical assessment and follow-up are necessary, include them even when buying an inexpensive retail product. If evaluating a prescribing service, establish what support it actually provides. A useful comparison makes those differences visible without certifying one incomplete quote as the cheapest.
Sources & further reading
Provider pages establish what a brand markets. Clinical and regulatory sources establish the limits of the evidence. Accessed October 8, 2026.
- La Roche-Posay: current Effaclar Duo+M salicylic-acid treatmentUS product page: 0.5% salicylic acid, 40 mL, displayed $24.99; not an older benzoyl-peroxide formula
- Differin: adapalene 0.1% gelOfficial source; checked October 8, 2026
- Musely: The Acne CreamTwo-month supply offer and provider-reported patient outcomes
- Curology: Custom Formula RxPersonalized ingredients, current prices and self-reported study description
- CoreAge Rx: Pore Favor product pageProvider formulation, starting price and care claims
- CoreAge Rx: treatment catalog and consultation termsOfficial source; checked October 8, 2026