9 Pre-Order Checks Every US Importer Should Run Before Buying Korean Hyaluronic Ampoule Serum

Before you release purchase order funds for a Korean hyaluronic ampoule serum, you need documented proof — not verbal assurances — that the manufacturer, the formula, and the label all meet US requirements. This checklist covers nine document categories a sourcing or QA manager should run through before committing funds. Each checkpoint tells you what to ask for, what a solid response looks like, and the red flag that means stop.

Why Documentation Matters Before You Commit

Import compliance rules for cosmetics changed significantly after the Modernization of Cosmetics Regulation Act of 2022 (MoCRA). Per the FDA, facility registration enforcement began on July 1, 2024. If your Korean supplier has not registered their manufacturing facility with the FDA, your shipment can be refused entry at a US port.

Beyond registration, the responsible person named on the product label now carries formal obligations for safety substantiation records, adverse event reporting, and product listing — obligations that did not exist in US federal law before MoCRA. A supplier who cannot document compliance with these requirements is not ready for US distribution, regardless of product quality.

Many Korean cosmetic manufacturers do carry the right credentials. Others claim credentials they no longer hold, or never completed. The only way to tell the difference before you wire funds is to request the documents, check the details, and verify key claims independently.

The nine checkpoints below follow the order you should run them — starting with the manufacturer's facility and ending with the incoming shipment you will receive.

Nine Checkpoints: Document by Document

Checkpoint 1: GMP Evidence (ISO 22716)

What to ask for: The full ISO 22716:2007 certificate, including the name of the issuing certification body and the validity dates.

What good looks like: A certificate issued by an accredited third-party certification body, currently valid, and covering the specific manufacturing location. Per the International Organization for Standardization, ISO 22716 covers production, control, storage, and shipment of cosmetic products. It is the globally accepted GMP benchmark for the cosmetics industry.

Red flag: A self-declaration stating the factory "operates to GMP standards." A scanned certificate with no issuer name visible. A certificate that has expired.

Checkpoint 2: Batch Certificate of Analysis (CoA)

What to ask for: A CoA for the specific batch or lot number referenced in the supplier's quote, signed by an authorized member of the manufacturer's quality unit.

What good looks like: Per the Contract Laboratory Network, a valid cosmetics CoA includes the product name, batch number, manufacturing and expiry dates, test results for microbial limits, heavy metals, and residual solvents, specification limits with pass or fail determinations, and an authorized signature. These fields confirm the batch was tested before release.

Red flag: A generic CoA with no batch number. An unsigned document. Results that omit microbial limits or heavy metals. A CoA dated years before the current quote.

Checkpoint 3: Stability and Preservative Efficacy Data

What to ask for: Two separate documents — (a) a stability test report and (b) a Preservative Efficacy Test (PET) report — both run on the finished formula, not on individual ingredients.

What good looks like: Per Zignify Regulatory Compliance, stability testing for cosmetic serums should include at least 3 months of accelerated testing at elevated temperature and humidity, plus 12 months of real-time stability testing. This data validates the stated 24-month shelf life and is part of required MoCRA safety substantiation records.

For PET, per Eurofins Scientific, a water-based multi-use product like a serum should have challenge testing using USP <51> or ISO 11930. The report should show which bacteria, yeast, and mold were introduced, the log-reduction results at each time point, and whether the formula met Criteria A or Criteria B.

Red flag: Stability data run on the hyaluronic acid ingredient rather than the finished 50ml formula. A PET report that does not name the specific preservative system. Missing stability data entirely.

Checkpoint 4: INCI Ingredient Disclosure and Restricted-Ingredient Screen

What to ask for: The full INCI ingredient list in descending order of predominance — every ingredient in the formula, listed by its INCI common name.

What good looks like: Per 21 CFR 701.3, all cosmetic ingredients for US retail must be declared in descending order using their INCI names. Per the FDA, hyaluronic acid and niacinamide are not on the prohibited or restricted ingredient list under 21 CFR Part 700.

What to verify yourself: If the formula contains any color additives, check each one against the FDA's approved list at 21 CFR Parts 73, 74, 81, or 82. Per the FDA, color additives in cosmetics require pre-market approval, and many require batch certification in FDA laboratories before legal use in the US market.

Red flag: Ingredients listed under trade names rather than INCI names. A color additive you cannot locate in the FDA approval tables. An INCI list provided only in Korean.

Checkpoint 5: MoCRA Facility Registration and US Responsible Person

What to ask for: (a) The FDA MoCRA facility registration number for the manufacturing site. (b) A signed appointment letter or contract naming a US Responsible Person who will appear on the product label.

What good looks like: Per the FDA, facilities required to register under MoCRA had to complete registration by December 29, 2023, with enforcement beginning July 1, 2024. Per Cosmeservice Regulatory, registrations must be renewed every two years, and facilities must update their registration within 60 days of any changes. To verify the registration number independently, search FDA Cosmetics Direct.

The Responsible Person is defined by the FDA as the manufacturer, packer, or distributor whose name appears on the label. Per Zignify Regulatory Compliance, a non-US manufacturer must designate a US agent to serve as the official point of contact with the FDA. Without a US Responsible Person named on the label, the product cannot legally be marketed in the US.

Red flag: Supplier says facility registration "is in process" or "will be completed soon." Supplier cannot provide a registration number. No US Responsible Person has been identified.

Checkpoint 6: Marketing Claim Substantiation

What to ask for: For each marketing claim on the product, request the specific study or test run on the finished formula.

• "24-hour hydration": Per J&J Consulting Group, a claim like this requires instrumental testing using a Corneometer — which measures skin hydration levels — with measurements at baseline and at 24 hours post-application. Consumer self-evaluation studies can support but do not replace instrumental data.
• "Clinically tested": Per J&J Consulting Group, this claim requires a randomized controlled trial with a clear protocol, statistical significance, and documentation of ethical conduct. A complete Product Information File with the full testing protocol, raw data, and final scientific report is required. Ingredient supplier efficacy data alone is not sufficient — the claim must be proven in the final finished formula.
• "95% naturally derived": Per the FDA, there is no legal definition of "naturally derived" or "natural" for cosmetics. A percentage claim like this requires a documented calculation methodology explaining what qualifies as "naturally derived" in the formula and how the percentage is derived. The FTC requires that any such claim be strictly accurate.

Red flag: Supplier sends ingredient supplier data sheets as claim proof. "Clinically tested" is supported only by a raw material vendor monograph. No Corneometer data exists for the hydration claim.

Checkpoint 7: US Label Compliance

What to ask for: A draft US label for your review before any production run.

What good looks like: Per the FDA's summary of cosmetics labeling requirements under 21 CFR Parts 700–740 and the Fair Packaging and Labeling Act, every US cosmetic label must include: (1) a product identity statement on the principal display panel, (2) net quantity of contents in both US and metric units, (3) the name and address of the responsible person, (4) an INCI ingredient declaration in descending order of predominance, and (5) country of origin, required under the Tariff Act of 1930. All required label text must be in English.

Red flag: Net quantity appears in metric units only. The Responsible Person section is blank or shows the Korean manufacturer's address. INCI ingredients are listed in Korean or use trade names.

Checkpoint 8: Fill-Volume and Packaging Verification

What to ask for: A filled, sealed pre-shipment sample that is identical to the production run — same fill volume, same cap, same PET bottle.

What good looks like: Per Blackbird Skincare, importers should verify that net contents match declared quantities, including in both US and metric units as required by 21 CFR. Physical stress tests — leak tests and drop tests — simulate real-world conditions. A vacuum chamber test can verify packaging integrity for sealed bottles.

For a 50ml PET bottle: weigh the net fill on a calibrated scale. Drop the sealed bottle from a standard height to test the cap seal. Check for any visible leakage after the drop.

Red flag: Supplier cannot provide a filled sample before PO release. The actual fill weight is short of 50ml when weighed. The cap leaks on a basic drop test.

Checkpoint 9: AQL Incoming Inspection Plan

What to ask for: Before the shipment arrives, establish your inspection plan and communicate defect classifications to a third-party quality inspector.

What good looks like: Per QIMA, the standard for consumer goods is ANSI/ASQ Z1.4 at General Inspection Level II, with AQL 2.5 for Major defects (those affecting product function or appearance) and AQL 4.0 for Minor defects. Critical defects — such as contamination or adulteration — carry AQL 0, meaning zero tolerance. For a 4,000-unit lot at AQL 2.5, the standard sample size is 200 units.

Red flag: No inspection plan has been set before the shipment date. Supplier objects to a third-party pre-shipment inspection. No inspector has been arranged.

Red Flags: Stop and Do Not Release Funds

Individual red flags can sometimes be resolved with a follow-up request. When you encounter multiple red flags together — for example, a supplier who cannot produce a GMP certificate issuer name, has an unsigned CoA, and has not completed MoCRA registration — that is a pattern, not an oversight.

Two or more red flags from the checklist above should pause your purchase order until every open item is resolved. Release of funds is the point of maximum leverage in a sourcing relationship. Once the PO is placed, your options narrow considerably.

If the supplier cannot provide a filled pre-shipment sample before you release funds, that alone is a reason to stop.