Importing period underwear into the United States now requires closer coordination between the importer, manufacturer, testing laboratory and customs broker.
Beginning July 8, 2026, importers of consumer products subject to CPSC certification requirements must electronically submit certificate data through U.S. Customs and Border Protection’s Automated Commercial Environment, or ACE. This is commonly referred to as CPSC eFiling. (U.S. Consumer Product Safety Commission)
This does not mean that every garment suddenly needs a new certification. The first step is still to identify which safety regulations apply, whether testing is required and who is responsible for issuing the certificate.
For period underwear buyers, the main questions are:
- Does adult period underwear need a GCC?
- Is the factory or U.S. importer responsible?
- Does every style need separate testing?
- Is there an official GCC fee?
- What documents should the factory provide?
What Is a GCC?
A General Certificate of Conformity, or GCC, is a written statement confirming that a general-use consumer product complies with applicable safety rules enforced by the U.S. Consumer Product Safety Commission.
A GCC is based on product testing or a reasonable testing program. It is not a certification mark issued by CPSC and is different from OEKO-TEX, GRS, GOTS or ISO certificates.
For imported general-use products, the U.S. importer is normally the party that certifies compliance. A laboratory, manufacturer or compliance provider may help prepare the document, but the importer remains responsible for reviewing and using it. (U.S. Consumer Product Safety Commission)
Does Adult Period Underwear Need a GCC?
Adult period underwear is generally treated as wearing apparel and may be subject to:
16 CFR Part 1610 — Standard for the Flammability of Clothing Textiles
Adult apparel that is not exempt from flammability testing generally needs a GCC based on testing or a reasonable testing program. However, CPSC currently exercises enforcement discretion for adult apparel that qualifies for the testing exemptions under 16 CFR §1610.1(d). (U.S. Consumer Product Safety Commission)
Common testing exemptions include:
- Plain-surface fabrics weighing at least 2.6 ounces per square yard, or approximately 88.2 g/m², regardless of fibre content.
- Plain- or raised-surface fabrics made entirely from acrylic, modacrylic, nylon, olefin, polyester, wool or combinations of these fibres, regardless of weight.
These are testing exemptions, not exemptions from the overall flammability requirement. Products must still comply with the standard. (U.S. Consumer Product Safety Commission)
Why period underwear needs individual review
Period underwear normally contains more than one material, including:
- Outer body fabric
- Elastic waistband and leg openings
- Lace or mesh panels
- Moisture-wicking lining
- Absorbent layers
- Leak-resistant membrane
- Bonding or sewing materials
A product should not be classified only by its main fabric. For example, two styles may both use nylon and spandex but contain different lace, membranes, surface finishes or exposed components.
The complete product construction should therefore be reviewed before deciding whether testing is required.
Who Is Responsible: Manufacturer or Importer?
For period underwear manufactured outside the United States, the U.S. importer is normally responsible for the GCC and the final eFiling submission.
The importer may be the brand, distributor, Importer of Record or another U.S. company responsible for bringing the goods into the country.
The manufacturer normally provides:
- Product name, model number and buyer SKU
- Product photographs
- Material composition and fabric weight
- Factory name and production address
- Production date or batch information
- Applicable test report
- Laboratory details
- Manufacturing and traceability records
The importer normally handles:
- Confirming the applicable CPSC requirements
- Reviewing the testing basis
- Approving or issuing the GCC
- Providing correct importer and certifier information
- Completing eFiling directly or through a customs broker
The factory can prepare a GCC document using the importer’s information, but it should not replace the importer as the responsible certifying party.
Does Every Style Need Separate Testing?
Not always.
Different colours and sizes of the same product may often use the same testing basis when the materials, suppliers, construction and manufacturing process remain unchanged.
Different styles may also be grouped in some situations, but the test result must reasonably represent every product covered.
For period underwear, buyers should compare:
| Item | What must be checked |
|---|---|
| Main fabric | Composition, weight and surface |
| Absorbent structure | Lining, absorbent core and membrane |
| Trims | Lace, mesh, elastic and binding |
| Manufacturing | Sewing, bonding and finishing |
| Supply chain | Material suppliers and production factory |
| Product identity | Style number, SKU and photographs |
A cotton brief, bamboo-viscose brief and seamless nylon brief should not automatically share one test report simply because all three are period underwear.
If materials, suppliers or processes change, the original testing basis should be reviewed before it is reused.
How Much Does GCC Compliance Cost?
There is no official CPSC fee for creating a GCC.
The certificate itself can be prepared as a normal English document, provided it contains all required information. A specific certificate template is not mandatory. (U.S. Consumer Product Safety Commission)
However, companies may still pay for:
- 16 CFR Part 1610 testing
- A formal laboratory report
- GCC document preparation
- Product and SKU matching
- Compliance-data organisation
- Customs broker or ACE eFiling services
A quoted “GCC fee” may therefore include testing and document-preparation services rather than an official government certificate fee.
Buyers should ask whether the quotation includes:
- Product testing
- A complete test report
- GCC document preparation
- eFiling data preparation
- Actual ACE submission
Testing and GCC preparation do not automatically include customs filing.
Can One Test Report Support Different Importers?
The same valid test report may potentially support the same unchanged product sold to different U.S. buyers.
However, each importer should use a GCC containing its own correct company and certifier information.
For example, when one period underwear style is supplied to two unrelated U.S. importers:
- The product test report may remain the same.
- The factory and manufacturing information may remain the same.
- The importer information must be updated.
- Each importer must review and accept responsibility for its own certificate.
A GCC issued under one importer’s name should not be used by another unrelated importer without updating the certifier information.
What Changed With CPSC eFiling?
From July 8, 2026, importers of products requiring CPSC certification must electronically submit certificate data at the time of import entry.
The information may be submitted through a full CPSC PGA Message Set or by referencing certificate information stored in the CPSC Product Registry. The importer or its customs broker normally completes the ACE filing. (U.S. Consumer Product Safety Commission)
The foreign manufacturer does not usually complete the final customs entry, but it should prepare accurate information before shipment.
This makes product traceability increasingly important. A test report, product photograph, SKU, factory record and shipment information should all refer to the same product.
How Lynmiss Factory Supports U.S. Buyers
Lynmiss Factory can support U.S. private-label and OEM buyers with:
- Material and product classification
- BOM and fabric documentation
- Coordination of applicable 16 CFR Part 1610 testing
- Formal test-report preparation
- Product photograph and SKU matching
- Production and traceability information
- GCC document preparation using the importer’s details
- Organisation of supporting data for CPSC eFiling
- Review of material changes before repeat production
The final GCC approval and ACE eFiling remain the responsibility of the U.S. importer or its authorised customs broker.
For brands working with a private label period underwear manufacturer, beginning compliance preparation during product development can reduce delays before shipment.
Frequently Asked Questions
Is GCC an official certificate purchased from CPSC?
No. CPSC does not sell or directly issue a GCC. The responsible manufacturer or importer prepares it based on testing or a reasonable testing program.
Does every colour and size need a separate test?
Not necessarily. Colours and sizes may use the same testing basis when the materials, construction, suppliers and manufacturing process are unchanged.
Who completes CPSC eFiling?
The U.S. importer or its authorised customs broker normally submits the certificate data through ACE. The factory can prepare the supporting product, testing and manufacturing information.
Final Thoughts
CPSC eFiling does not transfer the importer’s responsibility to the overseas manufacturer.
The practical division of responsibility is:
The factory provides testing and traceability documentation. The importer approves the GCC and completes eFiling.
For period underwear brands, compliance preparation should begin before bulk production rather than after the shipment reaches the port.
Planning a private-label period underwear collection for the U.S. market? Lynmiss Factory can help coordinate testing and prepare the product, manufacturing and traceability documentation needed for your importer’s compliance process.
This article provides general information and does not constitute legal advice. Product-specific requirements should be confirmed with a qualified compliance adviser, testing laboratory or U.S. customs broker.