Efficacy of Preservation of Cosmetics

Preservatives are necessary to ensure consumer protection and prevention of cosmetics spoilage during normal and reasonably foreseeable product use.

Selection of preservatives requires in situ determination of their efficacy by microbiological challenge tests, which should be carried out by an expert, and include representative bacteria, yeast and mould that may be pathogenic, or may cause spoilage.

Common test methods include:

  • United States Pharmacopeia (USP) Chapter <51>
  • British Pharmacopoeia (BP) XVIC
  • European Pharmacopoeia (EP) Chapters 5.1.3
  • Cosmetic, Toiletry and Fragrance Association (CTFA) Microbiology Guidelines

Acceptance criteria were usually taken from that of the pharmacopoeia or CTFA.

Intertek also offers exclusive healthcare and beauty product research and development solutions, as well as production and supply chain strategies to ensure the utmost quality and safety of your cosmetics, toiletries, OTC drugs, therapeutic goods, and other products.

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