Behind every piece of underwear lies not just fabric and design, but a full-chain safety certification process from raw material to finished product.
As textiles that come into direct contact with skin, the quality and safety of underwear are of paramount concern to consumers worldwide. Regulatory bodies have placed underwear under strict supervision.
For manufacturers, obtaining internationally recognized certifications has become the “golden ticket” to entering the global market and securing orders from major brands.
Global Organic Textile Standard
Since its establishment in 1992 by the German Hornbach Institute,OEKO-TEX Standard 100 certification has become a mandatory requirement for many European and US buyers.
This certification test exceeds 1,000 harmful substances, including formaldehyde, heavy metals, and azo dyes, ensuring that products are harmless to human health.
OEKO-TEX classifies products into four categories: Baby textiles (Category I), underwear and bedding (Category II), clothing (Category III) and decoration materials (Category IV). Underwear manufacturers should pay special attention to the standards of Category II.
It is worth noting that the OEKO-TEX Standard 100 has a limit of 16 mg/kg for formaldehyde in textiles for infants and young children, which is more stringent than many national standards, reflecting the high safety requirements for intimate apparel products.
The Passport to American Brands
The HBI GSS (Global Supplier Standard) audit is essential for entering the supply chain of renowned brands like Hanes Brands and Champion. This audit system covers two main areas: Social Responsibility and Anti-Terrorism, and is conducted as an unannounced inspection.
This audit has over 10 zero-tolerance items. For example, child labor, wages below the local legal minimum, involuntary labor, and physical abuse are all zero-tolerance violations; their occurrence leads directly to a failed audit.
After passing the GSS audit, manufacturers are rated: ≥91% as a preferred supplier, 76-90% as a compliant supplier, 51-75% requires corrective action but can still receive orders, and ≤50% results in failure with no orders or shipments allowed.
The Safety Baseline in China
Underwear sold in the Chinese market must comply with GB18401-2010, which categorizes textiles into Class A, B, and C.
Underwear falls under Class B—products with direct skin contact. Requirements include formaldehyde content ≤75 mg/kg, pH between 4.0~8.5, and colorfastness tests for water, perspiration, and friction.
For infant underwear products, compliance with GB31701-2015 is also required. This standard includes all GB18401 requirements and adds specific stipulations for heavy metals, plasticizers, and cord safety.
According to the latest regulations, starting July 1, 2026, labels on student uniforms, underwear, and infant fiber products must include fiber composition, content, and safety technology category.
Cornerstone of Management Systems
ISO 9001 certification is a basic condition for many international brands when selecting suppliers. This certification proves that the manufacturer has a sound quality management system capable of consistently providing products that meet customer and regulatory requirements.
Manufacturers with ISO 9001 certification often gain customer trust more easily, as it represents standardized, systematic production processes and quality control capabilities.
Gateway to the Middle East Market
For underwear manufacturers aiming to enter the Middle East market, particularly Saudi Arabia, the Saber Certification is a mandatory requirement. This certification primarily focuses on product safety and compliance with Saudi Arabian technical regulations.
Compared to general apparel, Saber certification for underwear products is more stringent, requiring tests for carcinogenicity, allergenicity, and formaldehyde content. During the application process, manufacturers must provide third-party test reports and undergo factory inspections.
Industry Initiatives
Many international brands such as H&M and Walmart have their own supplier codes of conduct and factory audit requirements. These may include assessments in areas like chemical management, wastewater treatment, and workers’ rights.
BSCI (Business Social Compliance Initiative) is also a certification system recognized by many European buyers. It primarily evaluates a manufacturer’s social responsibility performance, covering working hours, wages and benefits, and health and safety.
When selecting underwear suppliers, brands and retailers no longer focus solely on price and design. Over 90% of mid-to-high-end European and American underwear brands list OEKO-TEX certification as a mandatory requirement for supplier screening. Large manufacturers like Hanes Brands and Champion scrutinize every aspect of the supply chain, from raw materials to finished products.
Under new regulations, a compliant piece of underwear, from the production line to the consumer, represents the manufacturer’s commitment to at least six different certifications. In today’s market, these credentials are no longer optional but essential for business survival and growth.
Conclusion: Beyond Compliance — Building a Market-Ready Enterprise
In today’s global apparel industry, certifications are far more than just paperwork or cost centers; they are strategic assets that define a manufacturer’s position in the marketplace. The journey through OEKO-TEX, GSS audits, ISO standards, and regional mandates like GB18401 or SABER is ultimately a journey toward operational excellence, risk mitigation, and brand equity building.
For a forward-thinking underwear manufacturer, this process translates into three concrete advantages: First, it future-proofs the business against increasingly stringent and volatile global regulations, ensuring seamless market access. Second, it builds unparalleled trust with brands, who are increasingly liable for their supply chain’s practices; a well-certified factory becomes a low-risk, preferred partner. Third, and perhaps most importantly, it aligns the business with the values of the modern consumer, who actively seeks transparency, safety, and ethical production behind the products they wear.
Cherry Hu is a lingerie purchasing manager with hands-on experience in underwear sourcing and factory coordination. She works closely with manufacturers to manage product development, fabric selection, fit standards, and cost control across different production stages.
Through her articles, Cherry shares real-world sourcing experience, common mistakes buyers should avoid, and practical tips for working with underwear suppliers. Her goal is to help brands and wholesalers make informed purchasing decisions and build long-term, reliable supply chains in the lingerie industry.
