October 2026: New Dentistry Standards for Tooth Bleaching Products Released

The latest advancements in Chemical Technology are underscored by the publication of two significant international standards this October 2026, aimed at the growing domain of dental whitening. The release of EN ISO 28399:2026 and ISO 28399:2026 delivers comprehensive specifications for external tooth bleaching products, offering clarity for manufacturers, dental professionals, and consumers alike. These harmonized standards standardize critical product requirements, testing protocols, packaging, and labelling, ensuring a higher level of patient safety and product efficacy. This update is essential reading for quality and compliance stakeholders looking to maintain best practices in the evolving oral care market.

Overview / Introduction

The dental and oral care sector is rapidly innovating to meet patient and consumer demands for aesthetic solutions such as tooth whitening. With a sustained global rise in cosmetic dentistry, the importance of robust standards in product quality and safety has never been higher. Well-defined guidelines reduce risks, enable consistent results, and underpin confidence for both dental professionals and consumers. This article reviews October 2026's newly published standards: EN ISO 28399:2026 and ISO 28399:2026, both addressing the requirements for external tooth bleaching products. Readers will discover how these standards impact product development, regulatory compliance, and safety across industry segments.

Detailed Standards Coverage

EN ISO 28399:2026 - Dentistry - External Tooth Bleaching Products (ISO 28399:2026)

Dentistry - External tooth bleaching products (ISO 28399:2026)

This newly released European-adopted standard, published by CEN, outlines requirements and testing protocols for external tooth bleaching products. Addressing both professional (in-office) and consumer (at-home) use, this standard guides manufacturers through essential specifications encompassing the product's composition, concentration control, labelling, packaging, and instructions for use. The standard emphasizes clarity for both regulators and end-users, ensuring a consistent approach to product safety and performance.

Key technical points include:

• Classification of products by application (professional and consumer use)
• Assessment of the concentration of active bleaching agents (e.g., hydrogen peroxide equivalents)
• Test methods for evaluating potential impacts on tooth structure, such as surface microhardness and erosion, using validated laboratory techniques
• Comprehensive packaging and labelling requirements for traceability and user safety

Manufacturers, dental professionals, and distributors will all need to implement or verify new labelling, storage, and user instruction guidelines. The standard does not address biological safety, which remains subject to country-specific regulatory controls.

Key highlights:

• Detailed limits for active ingredient concentration (+10%/-30% of stated value)
• Mandatory packaging and marking elements (batch, expiration, recommendations)
• Rigorous testing for surface hardness, erosion, and chemical stability

Access the full standard:View EN ISO 28399:2026 on iTeh Standards

ISO 28399:2026 - Dentistry — External Tooth Bleaching Products

Dentistry — External tooth bleaching products

The latest ISO edition (fourth) for external tooth bleaching products further harmonizes international requirements, focusing on consistency in global oral care product quality. Like its EN ISO counterpart, this version targets both in-office and at-home bleaching systems, specifying minimum performance and labelling standards to support global trade, reduce risk, and ensure user protection.

The standard includes:

• Concentration control and validated chemical test methods for hydrogen peroxide, ensuring actual product content aligns with declared claims
• Evaluation of changes to dental enamel and dentine, with microhardness and erosion thresholds
• Prescribed packaging, marking, and instructional material requirements, including traceability and user guidance

For manufacturers exporting globally, alignment with ISO 28399:2026 ensures access to broad markets and supports procurement teams in selecting compliant, high-quality products. The revision removes Annex C (test method for laboratory assessment of tooth bleaching efficacy), focusing now on clarity and precision in product specification and user information.

Key highlights:

• Unified international approach for dental bleaching product requirements
• Enhanced status for traceability and user instructions
• Alignment with latest testing methodologies for confirmation of efficacy and safety

Access the full standard:View ISO 28399:2026 on iTeh Standards

Industry Impact & Compliance

The October 2026 publication of these harmonized standards impacts manufacturers, importers, dental professionals, and regulatory authorities across the oral care and cosmetic dentistry sectors. By aligning product requirements at both the national and international levels, organizations can:

• Minimize market entry barriers and streamline regulatory submissions
• Reduce the risk of non-compliance penalties, recalls, or market withdrawals
• Ensure their offerings meet evolving safety and efficacy benchmarks, thereby building trust with both clinicians and consumers

Compliance with the new standards should be a near-term priority, with organizations reviewing product formulations, packaging, quality control testing, and accompanying documentation. Transition timelines may vary, but early adoption is recommended to mitigate supply chain disruptions and ensure continued market access.

Technical Insights

Both EN ISO 28399:2026 and ISO 28399:2026 share a technical framework that reinforces product integrity and consumer safety:

Common technical requirements:

• Maximum allowable variation for active ingredient concentration
• Test protocols for surface microhardness reduction and comparative erosion levels using reference methods
• Standardized preparation and application guidance for lab testing

Implementation best practices:

• Routine validation of chemical assay methods (e.g., modified thiosulfate titration for hydrogen peroxide)
• Adoption of harmonized packaging and labelling workflows in quality control
• Regular staff training on updates to test procedures, regulatory document retention, and recall response plans

Testing and certification considerations:

• Use of certified reference materials and documented laboratory procedures for required tests
• Maintenance of traceable records for each batch, linked to labelling requirements (e.g., lot, expiry, composition)
• Engagement with third-party testing or notified bodies for international market clearance where needed

Conclusion / Next Steps

The release of EN ISO 28399:2026 and ISO 28399:2026 in October 2026 marks a critical update in the regulation and assurance of dental bleaching products worldwide. Industry professionals must prioritize reviewing and aligning with these standards, ensuring all products in the supply chain meet the new requirements for concentration accuracy, physical integrity, and clear consumer communication.

Recommended actions:

1. Audit all existing and in-development bleaching products for compliance with updated standards
2. Review and update quality management systems, labelling, and user instructions
3. Engage with notified bodies or third-party auditors for certification and market clearance
4. Stay informed about future updates via platforms like iTeh Standards

Explore the full text and official guidance by accessing the EN ISO 28399:2026 and ISO 28399:2026 documents on iTeh Standards.

By understanding and acting on these updated requirements, organizations will safeguard product quality, enhance patient safety, and remain at the forefront of the dynamic dental care industry.