ISO 11930:2019/Amd 1:2022

Overview

ISO 11930:2019/Amd 1:2022 is an important amendment to the international standard ISO 11930:2019, titled Cosmetics - Microbiology - Evaluation of the antimicrobial protection of a cosmetic product. Published by the International Organization for Standardization (ISO), this document addresses the microbiological assessment methods used to evaluate the efficacy of antimicrobial preservation systems in cosmetic products. The 2022 amendment refines testing procedures and introduces updated compositions for microbiological culture media, aimed at improving the reliability and accuracy of antimicrobial protection evaluations.

This amendment is vital for cosmetic manufacturers, microbiologists, and quality control professionals who seek to ensure product safety by preventing microbial contamination through validated antimicrobial preservative effectiveness.

Key Topics

• Antimicrobial Protection Evaluation
  The standard focuses on methodologies to test and verify the effectiveness of antimicrobial agents in cosmetics. This ensures that products resist microbial growth throughout their shelf life, protecting consumer safety.

• Introduction of Modified Eugon LT Broth
  The amendment introduces a modified Eugon LT broth as an alternative culture medium for microbiological challenge tests. This substitute offers enhanced test media properties:

  • Components include pancreatic casein peptone, soy papaic peptone, sodium chloride, L-cystine, sodium sulfite, glucose, egg lecithin, polysorbate 80, and sodium lauryl ether sulfate.
  • Preparation instructions detail dissolution and sterilization processes to maintain consistent pH and nutrient availability essential for microbial growth during testing.

• Updated Preparation Protocols
  The amendment provides precise instructions to prepare the modified Eugon LT 100 broth, including sterilization at 121 °C for 15 minutes, and pH adjustment to 7.0 ± 0.2. These protocols support more reproducible antimicrobial testing environments.

• Collaboration and Compliance
  Developed by ISO/TC 217 (Cosmetics) in cooperation with CEN/TC 392, the amendment aligns with international standardization objectives and facilitates compliance with global cosmetic microbiology regulations.

Applications

• Cosmetic Product Development
  Cosmetic formulators utilize the updated antimicrobial efficacy testing protocols to validate preservative systems during product development, ensuring formulas meet safety standards against microbial contamination.

• Quality Control and Assurance
  Laboratories responsible for routine quality assurance rely on ISO 11930:2019/Amd 1:2022 to conduct standardized antimicrobial protection tests, supporting batch release decisions and regulatory compliance.

• Regulatory Submissions
  Compliance with this standard provides evidence for regulatory bodies demonstrating that cosmetic products maintain microbiological safety throughout their intended use periods.

• Microbiological Research
  Researchers studying cosmetic preservatives and microbiological behavior leverage the amended test media and procedures to enhance study accuracy and reproducibility.

Related Standards

• ISO 22716: Cosmetics - Good Manufacturing Practices (GMP)
  Complements antimicrobial evaluation by establishing hygiene and quality guidelines for cosmetic manufacturing environments.

• ISO 16212: Cosmetics - Microbiology - Enumeration of Bacteria and Yeasts
  Provides methods for microbial quantification relevant to contamination assessments in cosmetics.

• ISO 18416: Cosmetics - Microbiology - Enumeration of Preservative-Resistant Micro-Organisms
  Supports detection of microorganisms resistant to preservatives, aligning with antimicrobial protection tests.

• CEN Standards on Cosmetics
  European counterpart standards developed alongside ISO documents to harmonize cosmetic microbiology assessment within the EU market.

By adhering to ISO 11930:2019/Amd 1:2022, cosmetic manufacturers and laboratories ensure robust antimicrobial protection testing. This standard amendment enhances the safety, efficacy, and regulatory compliance of cosmetic products, ultimately safeguarding consumer health and supporting global cosmetic industry standards.