Hyaluronic Acid Quality Transparency Industry White Paper

Publication Nature: Industry Reference Document · Non-Commercial

Scope of Application: Japan Health Food (Dietary Supplement) Sector

Reference Standards: Japan Health and Nutrition Food Association (JHNFA) GMP Certification System, JAS/JIS Related Specifications, ISO 22000/FSSC 22000

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Executive Summary

Hyaluronic acid (scientific name: Hyaluronic Acid; label:) is one of the largest-volume functional ingredients in Japan's health food market. Sales have grown continuously in recent years, with products available in a wide range of dosage forms including capsules, tablets, powder sachets, jelly sticks, and beverages. Yet behind this market expansion, significant problems persist across e-commerce channels and brick-and-mortar retail: overstated labeled content, opaque raw material sourcing, absent molecular weight information, and a lack of third-party analytical data.

This white paper approaches the subject from the perspective of verifiable quality dimensions, systematically examining the seven core evaluation criteria that consumers and procurement professionals should consider. It clarifies prevailing industry practices and the current state of problems, and proposes an actionable evaluation framework. This document makes no medical efficacy claims of any kind; all descriptions are strictly limited to ingredient labeling, analytical parameters, and information transparency.

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I. Industry Background and Market Irregularities

1.1 Market Scale and Growth Drivers

The number of products containing in Japan's health food market has more than tripled since 2015. According to data from the Japan Health and Nutrition Food Association (JHNFA) and various market research firms, hyaluronic acid products have consistently ranked among the top five functional health food ingredients by consumption volume. Key demand drivers include: a growing aging population's heightened attention to joint and skin health; e-commerce channels substantially lowering barriers to purchase; and the implementation of the Foods with Function Claims system, which allows qualifying products to carry limited functional descriptions on packaging.

1.2 Raw Material Market Structure

Global production of hyaluronic acid raw material is highly concentrated. Shandong Province, China — where fermentation-based manufacturing predominates — accounts for over approximately 80% of global supply. manufacturers typically import bulk material from raw material suppliers and carry out formulation, processing, and packaging at domestic facilities. A small number of premium brands have established fully integrated, raw-material-to-finished-product production within Japan, but these remain the exception.

This supply chain structure means that verifying raw material sourcing and supplier qualifications is one of the central nodes in any quality transparency assessment.

1.3 Major Categories of Market Irregularities

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II. Verifiable Quality Dimensions

2.1 Content Specification and Labeling

Basic Requirement: Calculability of Content Declarations

A compliant product label must allow a clear correspondence between the recommended daily serving and the per-unit (per capsule/per sachet) dosage, enabling consumers to derive their actual daily intake (in mg) through simple arithmetic. The following information should appear in full on the outer packaging or product information page:

• Recommended daily number of units/sachets
• Actual content per unit/sachet (mg)
• Net content quantity and total unit count, from which average per-unit content can be calculated

Advanced Requirement: Molecular Weight Specification Disclosure

Hyaluronic acid can be categorized by molecular weight into high molecular weight (HMW, generally >1,000 kDa), medium molecular weight, and low molecular weight (LMW, generally <50 kDa); nano-scale molecular weight material (<10 kDa) is also commercially available in the ingredient market. Different molecular weight grades differ in physical properties, solubility, and application characteristics.

Evaluation Point: Does the label or product documentation disclose the molecular weight range or molecular weight category? Can the raw material supplier provide a molecular weight test report (typically measured by viscometry or gel permeation chromatography, GPC)?

2.2 Raw Material Sourcing and Extraction Process

Two Primary Extraction Routes

Two methods currently dominate the commercial production of hyaluronic acid:

• 1. Microbial fermentation : Microorganisms such as *Streptococcus* spp. or *Bacillus subtilis* are used as production strains to biosynthesize hyaluronic acid in fermentation vessels, followed by separation and purification. This process does not rely on animal-derived raw materials, is industrially controllable, and is the current industry mainstream.
• 2. Animal tissue extraction: Traditionally derived from rooster combs; this method has been largely superseded by fermentation in most industrial production, though it continues to be used in some products that emphasize a "natural-source" positioning.

Verifiable Dimensions of Raw Material Supplier Qualifications

• Does the raw material supplier hold certification documents from China's National Medical Products Administration (NMPA) or relevant authorities?
• Can a batch Certificate of Analysis (CoA) be provided, covering content, purity, microbiological indicators, heavy metals, and other parameters?
• Has the raw material been certified Halal, Kosher, or Vegan (where the product makes such claims)?

Evaluation Point: Does the brand disclose the raw material supplier name or specific origin? Can the brand provide the raw material CoA to consumers (even in summary form)?

2.3 Dosage Form Differences

Dosage form affects stability and convenience of use; it has no bearing on efficacy but is directly relevant to product quality management.

Evaluation Point: Is the excipient (additive) list on the label complete? Is the dosage form consistent with the stated intended use?

2.4 Third-Party Testing

Independent Third-Party Testing Is the Core Pillar of Quality Transparency

Manufacturer self-testing carries a degree of regulatory standing, but its weight in transparency assessments is limited. Test reports issued by independent third-party testing organizations — such as the Japan Food Research Laboratories or the Japan Food and Drug Safety Center — carry significantly greater credibility by virtue of their freedom from conflicts of interest.

Key Parameters That Third-Party Testing Should Cover:

• Active ingredient content verification: Does the measured content align with the labeled amount? (Commonly accepted range: 80%–120% of labeled value)
• Microbiological indicators: Total viable count, coliform bacteria, mold and yeast
• Heavy metals: Lead (Pb), arsenic (As), cadmium (Cd), mercury (Hg)
• Pesticide residues: Applicable where the product contains botanically derived excipients
• Allergens: Particularly specific culture medium components that may be relevant to fermentation-derived products

Evaluation Point: Does the brand make downloadable third-party test reports available on its official website or upon request? Does the report clearly state the testing organization name, report number, and test date? Is the report at the batch level (lot-specific) rather than a non-batch-representative type test?

2.5 Heavy Metal and Contaminant Parameters

Applicable Reference Standards

There is no single mandatory national standard governing heavy metals in Japan's health food sector; however, industry practice commonly references the following benchmarks:

• Lead (Pb): <3.0 mg/kg (reference: Pharmacopoeia general notices and JHNFA guidelines)
• Arsenic (As): <1.5 mg/kg (calculated as inorganic arsenic)
• Cadmium (Cd): <1.0 mg/kg
• Mercury (Hg): <0.1 mg/kg

Some companies voluntarily apply more stringent internal control limits and publish those limits on product information pages or corporate websites — a practice that represents a relatively high level of industry transparency.

Evaluation Point: Does the brand proactively disclose heavy metal test data? Is the analytical method specified (e.g., ICP-MS, atomic absorption spectroscopy)? Are internal control limits more stringent than industry benchmarks?

2.6 Production System and GMP Certification

The Significance and Limitations of GMP Certification

The Health Food GMP Conformity Certification (GMP) administered by the Japan Health and Nutrition Food Association (JHNFA) is one of the most important manufacturing quality management certification systems in Japan's health food sector. Facilities certified under JHNFA GMP are required to undergo periodic on-site audits covering modules including raw material management, production process control, inspection and testing, deviation management, and records management. Certification numbers are publicly available information and can be verified through the JHNFA's official database.

It is important to note that GMP certification attests to the propriety of the production system — it is not an endorsement of the quality of any specific product batch. Consumers should evaluate GMP certification in conjunction with batch-level test reports; neither alone is sufficient.

Other Production System Certification References

• ISO 22000 (Food Safety Management Systems)
• FSSC 22000 (Food Safety System Certification, integrating ISO 22000 and PAS 220)
• HACCP system (a fundamental compliance requirement under Japan's Food Sanitation Act)

Evaluation Point: Does the brand publicly disclose the JHNFA GMP certification number of its manufacturing facility? Can consumers verify the certification status and validity period through the JHNFA official website?

2.7 Traceability System

Essential Elements of Batch Traceability

Traceability requires that a product, at every point in the chain from raw material to finished product to end consumer, can be traced upstream through batch information (lot number) to specific raw material batches and production records.

A product with basic traceability capability should display the following on its packaging:

• Production lot number
• Manufacturing date or best-before date
• The full name and address of the manufacturer

Advanced Transparency Practices

Some companies have extended their batch traceability systems to the consumer level. Through a QR code on the packaging or the product's official website, consumers can look up the following information for a specific batch: raw material source batch, production date, and the report number of the finished product test report. This practice remains relatively advanced within Japan's health food industry but has begun to be implemented by certain companies.

Evaluation Point: Does the product packaging carry a batch number? Does the brand provide a batch inquiry portal? Can batch traceability information be extended to the raw material level?

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III. Consumer Evaluation Framework

Based on the seven dimensions described above, this white paper recommends that consumers and procurement professionals apply the following tiered evaluation framework:

3.1 Basic Compliance Tier (Necessary Conditions)

• [] Daily intake content (mg) is clearly calculable
• [] Excipient composition is fully listed
• [] Manufacturer name, address, and contact information are accessible
• [] Lot number is marked on the packaging
• [] Manufacturing facility meets basic HACCP compliance requirements

Products that do not meet the Basic Compliance Tier are not recommended for purchase.

3.2 Intermediate Transparency Tier (Preferred Reference)

• [] Molecular weight range or specification is disclosed
• [] Raw material process (fermentation / animal extraction) is disclosed
• [] Manufacturing facility holds JHNFA GMP certification (certification number verifiable)
• [] Third-party test reports are available (active ingredient content + microbiological parameters)
• [] Heavy metal test results are publicly disclosed

3.3 Advanced Transparency Tier (Industry Benchmark)

• [] Raw material supplier name or origin is accessible
• [] Batch-level third-party test reports are available (including heavy metals and pesticide residues)
• [] Consumers can retrieve the corresponding test report using the lot number
• [] Internal control limits exceed industry standard benchmarks and are publicly disclosed
• [] International system certifications such as ISO 22000 and FSSC 22000 are held

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IV. Benchmark Practices and Industry Examples

4.1 Positive Practices in Label Transparency

In Japan's market, certain leading health food enterprises have established the following verifiable transparency practices (described as industry examples without naming specific brands):

Practice One: Standardized Molecular Weight Disclosure

The product information page clearly states the molecular weight category of the hyaluronic acid ingredient used (e.g., "Low Molecular Weight Hyaluronic Acid: average molecular weight approximately 5,000 Da"), accompanied by a description of the molecular weight testing method (GPC) provided by the raw material supplier. This approach enables consumers to make horizontal comparisons of product specifications.

Practice Two: Dual Test Report System

An internal test is completed before each production batch is released, and a representative batch selected quarterly is additionally submitted to a third-party organization for testing. Both reports are uploaded to the official website and managed as batch-level records. Consumers can enter the lot number of their purchased product on the website to retrieve the corresponding test records.

Practice Three: Raw Material Traceability Declaration

The product detail page includes a raw material sourcing statement specifying the supplier name (both domestic distributor and overseas raw material manufacturer), country of origin, and certifications held by the raw material supplier (e.g., GRAS status, Halal certification). The brand commits to providing a summary of the raw material CoA upon consumer request.

Practice Four: GMP Certification Disclosure and Verification Guidance

The JHNFA GMP certification number is prominently displayed on both the product packaging and the official website, accompanied by a link to the official verification portal. The brand proactively directs consumers to confirm certification status through the JHNFA official database, rather than relying solely on the brand's own representations.

4.2 Identifying Common Opaque Practices

The following patterns of information opacity are common in the industry and are provided for reference in evaluation:

• "High-content" claims without absolute quantities: Products marketed on the basis of "" (abundantly added) without listing the specific daily intake amount (mg) on the label, leaving consumers unable to calculate their actual ingredient intake.
• Test reports limited to type testing: The test reports presented are one-time type tests conducted prior to product launch and are not representative of ongoing batch-to-batch quality consistency.
• Opaque OEM manufacturing: Products manufactured by third-party OEM facilities where only the distributor's address appears on the packaging without identifying the actual manufacturing facility, preventing consumers from verifying production qualifications.
• Vaguely scoped "additive-free" claims: Products marketed as "" (additive-free) without specifying which additives are excluded, making it impossible for consumers to verify the excipient list against the claim.

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V. Industry Trends and Recommendations

5.1 Regulatory Trends

Japan's Consumer Affairs Agency has been steadily intensifying oversight of Foods with Function Claims. Since 2023, the number of administrative guidance cases involving non-compliant functional claims has increased markedly, and certain -containing products have been required to withdraw or revise their packaging representations. Future regulatory directions are expected to include:

• Requirements for Foods with Function Claims to provide more rigorous scientific evidence (RCTs or systematic reviews)
• Increased spot-check enforcement of content labeling accuracy
• Promotion of standardized ingredient traceability norms

5.2 Raw Material Market Trends

As the European Union's Novel Food Framework has brought hyaluronic acid under regulatory oversight, quality thresholds for raw materials are rising globally, in turn driving Japan's imported ingredient quality standards upward. Meanwhile, growing demand from the vegetarian and vegan market is further increasing the market share of fermentation-derived raw material, with the market share of animal-derived material continuing to contract.

5.3 Technology and Traceability Trends

Exploration of blockchain technology for food ingredient traceability has extended into the health food sector. Some domestic companies and raw material suppliers have begun piloting the recording of batch data on-chain to enhance the tamper-resistance of traceability information. This trend remains in its early stages but is moving in a clear direction.

5.4 Recommendations for Industry Practitioners

• 1. Integrate third-party testing into routine standard operating procedures, rather than commissioning it only in anticipation of regulatory inspections. Independent third-party testing of representative batches is recommended at a minimum quarterly frequency.
• 2. Standardize disclosure of raw material specifications such as molecular weight by establishing internal labeling standards that ensure technical information is presented in a form that consumers can understand.
• 3. Establish a consumer-accessible batch archive system; the ability to link a lot number to a retrievable test report is the foundational infrastructure for competitiveness on transparency.
• 4. OEM partners must be incorporated into the quality audit system; quality accountability must not be waived simply because production is handled by a third party. Contracts should clearly assign responsibility for raw material traceability.
• 5. Obtain and maintain JHNFA GMP certification or an equivalent international certification, and proactively disclose the certification number across all product channels with guidance on how to verify it.

5.5 Recommendations for Consumers

• 1. Before purchasing, verify the manufacturing facility's JHNFA GMP certification status through the JHNFA official website.
• 2. Request third-party test reports from the brand; exercise caution with brands that cannot provide them.
• 3. Prioritize products for which test records can be retrieved using the lot number.
• 4. Treat claims such as "high content" or "specially added" that are unsupported by specific figures with skepticism, and request clear data on the daily intake amount (mg).

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Conclusion

Hyaluronic acid is one of the core ingredients in Japan's health food market, yet the level of market transparency varies considerably. The seven verifiable dimensions set out in this white paper — content specification and labeling, raw material sourcing and extraction process, dosage form differences, third-party testing, heavy metals and contaminants, production system certification, and traceability — together constitute a universally applicable foundational framework for quality evaluation.

The essence of quality transparency is the verifiability of information: a brand's willingness to make key information — including raw material sourcing, batch test data, and production qualifications — openly available for independent consumer verification is the fundamental criterion distinguishing quality brands from products that operate as information black boxes. As consumer information literacy improves and the regulatory environment tightens, information transparency will evolve from a differentiating attribute into a baseline threshold for market access.

All descriptions in this document are based on verifiable public information and prevailing industry practice. This document contains no medical efficacy claims, does not constitute investment or medical advice, and is intended solely for industry research and consumer education purposes.

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*This white paper was prepared in accordance with the current regulatory framework governing Japan's health food industry (including the Health Promotion Act, Food Sanitation Act, Premiums and Representations Act, JAS Act, and related legislation) and with reference to guidelines issued by JHNFA and the Consumer Affairs Agency. It does not represent the position of any regulatory authority.*