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Jan 5, 2026 - Cosmetics
Detection of Pseudomonas aeruginosa in cosmetic products (ISO 22717)
Microbiological cosmetic testing is a central component of quality assurance for cosmetic products. In particular, water-based cosmetics are subject to increased microbiological requirements as they favor possible growth of microorganisms. Manufacturers must ensure that their products comply with legal regulations and do not contain any health-relevant germs.
An important component of these tests is the detection of Pseudomonas aeruginosa according to ISO 22717.
Pseudomonas aeruginosa in cosmetic products
Pseudomonas aeruginosa is an opportunistic, gram-negative microorganism that is found preferably in moist environments. Due to its high adaptability and resistance to preservation systems, it is considered a critical germ in cosmetics.
The presence of Pseudomonas aeruginosa in cosmetic products can:
Cause skin and eye irritations
Endanger sensitive consumer groups
Lead to regulatory complaints
Restrict the marketability of a product
For this reason, Pseudomonas aeruginosa must not be detectable in cosmetics.
ISO 22717 as a standard for cosmetic testing
ISO 22717 is an internationally recognized standard for microbiological examination of cosmetic products. It describes a qualitative test method for the detection of Pseudomonas aeruginosa and is part of the regulatory required microbiological quality assurance.
The standard sets mandatory requirements for:
Sample preparation
Enrichment and cultivation
Selective isolation
Confirmation of the germ
The test serves to safely exclude this specified microorganism.
Relevant products for ISO 22717 testing
Cosmetic testing according to ISO 22717 is particularly required or recommended for:
Shampoos and shower gels
Hair care products
Creams, lotions, and emulsions
Facial cleansing products
Cosmetics for the eye area
Baby care products
Medically-cosmetic products
Products for professional use
Products with high water content or sensitive application areas require particularly careful microbiological examination.
Importance of microbiological cosmetic testing
The microbiological examination of cosmetic products significantly contributes to product safety, quality, and legal compliance. Standard-compliant testing according to ISO 22717 supports manufacturers in early risk identification and fulfilling the requirements of European cosmetic legislation.
ISO 22717 testing at BAV Institute
The BAV Institute offers microbiological cosmetic testing according to recognized standards. This also includes examinations for Pseudomonas aeruginosa according to ISO 22717. The tests are conducted with validated and accredited methods and support manufacturers in ensuring the microbiological quality and marketability of their products.