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Product review · Updated 2026-09-30 · Source dates below

COSRX AC Collection Calming Foam Cleanser: the named formula and catalog record

The foam’s complete published list is useful; a salicylic amount and matched price unit remain unresolved.

Public-source editorial review. No clinician sign-off, firsthand product testing or personal assessment claimed.

COSRX’s AC Collection Calming Foam Cleanser is a specific foam cleanser, not a general record for every COSRX product containing salicylic-related ingredients. Its page publishes a full ingredient list, while a separate cleanser catalog places the item among other named products. Those records contribute different details, including a price display that needs its size association retained.

We read the manufacturer material for this September 30, 2026 review, without buying the cleanser or testing its foam, comfort or results. The discussion follows the actual declaration and catalog entry. It does not borrow a concentration from BHA Blackhead Power Liquid, turn customer summaries into a trial or assume that two visible prices describe the same purchase.

In this reading

Find the exact foam in both records

The product page names AC Collection Calming Foam Cleanser and describes a gentle foam. It lists 50 mL and 150 mL sizes. The separate manufacturer cleanser catalog includes the same full product name and those two quantities among several other named cleansing products. This helps locate the item without treating the whole brand as one formula. Exact product page and cleanser catalog.

The product-version guide explains why complete names matter when neighboring items share ingredient or benefit language. Catalog placement is useful identification evidence. It does not show that a bottle has been examined, establish every market version or make the foam interchangeable with an unrelated salicylic-acid liquid.

The published list is more than an AC-RX headline

The full returned ingredient list names water, glycerin, stearic acid and other components, including salicylic acid. It also lists Lavandula Hybrida Oil, linalool, limonene and three centella-related ingredient names. Those are literal declaration details, not findings about fragrance experience, allergy or personal comfort. The review does not infer their quantities or combine them into preparation instructions. Full manufacturer list.

This matters because the page’s highlighted AC-RX story is only part of the formula. A reader checking an ingredient question gains a more complete identity record from the list, while still needing the actual package version where that is uncertain. Familiar names do not supply an assay or verify that every container has identical contents.

A named ingredient leaves its amount open

COSRX describes salicylic acid in the foam’s ingredient section but does not establish a percentage in the passages reviewed. The AC-RX explanation names madecassic acid, asiaticoside and asiatic acid; the catalog echoes those names for this cleanser. Neither description provides the missing salicylic amount. Foam declaration and catalog entry.

There is no reason to fill that gap with a number taken from BHA Blackhead Power Liquid or another brand’s product. The matching-strength guide considers what even an established percentage can and cannot answer. Here, the narrower supported finding is that salicylic acid is named, while its amount remains unverified by this review.

The customer percentages are explicitly review summaries

The product page labels its customer synthesis as AI-generated. It presents topic percentages involving clarity, appearance and other experiences alongside a review total and individual buyer comments. Those percentages describe the site’s treatment of customer material; they do not identify a controlled group studied with this exact cleanser. Customer-summary section.

This distinction changes what the numbers can contribute. They may show which experiences appear in a review summary, but they cannot provide a clinical success probability, explain a comparison group or establish how another person will respond. A detailed list of review themes remains different from a published protocol and measured finished-product outcome, even when the themes echo the manufacturer’s benefit language.

Two price displays cannot be silently aligned

The freshly checked product page displays $15 beside a size interface showing both 50 mL and 150 mL. The retained catalog entry displays $9 beside its 50/150 mL wording. The sources do not establish a confident matched-size transaction comparison between those figures. A review should retain the ambiguity rather than select whichever number makes a better value claim. Current page display and catalog display.

FDA’s labeling explanation treats quantity as a separate field. The plan-price guide similarly keeps a commercial unit attached to its amount. No order was placed, no restock notification was submitted and no delivered charge or availability was verified here. Quantity context.

A cleanser-line description is not the foam’s trial

The catalog discusses COSRX cleansers collectively, using language about removing impurities without stripping moisture. That is a manufacturer description of the line. It cannot fill the missing participant group, comparator or measurement method for a study of this exact AC Collection foam. Its product page’s benefit and target headings remain separately attributed descriptions. Line context and foam claims.

FDA distinguishes cosmetic appearance claims from claims with drug purposes and requires truthful, nonmisleading labeling. That framework helps keep the wording precise; it does not let this review certify the cleanser’s regulatory compliance or approve its claims. A brand’s broad assurance and a product-specific outcome report are different records. FDA claims context.

The remaining question is about the actual item

The useful unresolved details are the foam’s salicylic amount, the applicable package version and the quantity associated with the current offer. The published ingredient list and catalog location answer parts of identity without settling those fields. FDA notes that similar names and changing labels make the actual record important. Manufacturer list, catalog identity and FDA label context.

For further reading, the Peach Slices entry and Bubble entry document separately named products. The fixed comparison records also separate identity from evidence and supply terms. These links help organize questions without assigning a winner, proposing a substitute or treating a missing concentration as a reason to invent one.

Source records

  1. COSRX AC Collection Calming Foam Cleanser, 150ml / 5.07 fl.oz | COSRX.COM ↗Manufacturer exact product, advertising and returned declaration · Accessed 2026-09-30
  2. COSRX OFFICIAL BRAND WEBSITE ↗Official range distinguishes AC Collection from the separately named Red Rice Pore Clarifying cleanser · Accessed 2026-09-30
  3. FDA: reading an OTC Drug Facts label ↗Regulator consumer labeling guidance · Accessed 2026-09-30
  4. FDA: cosmetic claims and drug-purpose distinctions ↗Regulator explanation of labeling claims · Accessed 2026-09-30
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