ISO 11930:2019
Cosmetics — Microbiology — Evaluation of the antimicrobial protection of a cosmetic product
Standard Introduction
ISO 11930:2019 is an published with amendment 1:2022 — iso/cd revision underway standard published by International Organization for Standardization (ISO). It is commonly used across Cosmetics & Skincare, Manufacturing, Chemical & Materials and applies in Global.
Use this page to review the official documentation, current status, and the certification or assessment bodies most commonly associated with ISO 11930:2019.
Preservation Efficacy
Provides a reference preservation efficacy test and a way to interpret test and risk-assessment evidence for a cosmetic product's antimicrobial protection.
Especially Relevant to Water-Based Skincare
Primarily supports water-soluble or water-miscible formulations and can be used with modification when water is the internal, discontinuous phase.
Risk-Based Route
Allows low-microbiological-risk products to be assessed through the ISO 29621 risk route instead of automatically applying the reference test.
list_alt Decision Path
- Define the finished formulation and packaging configuration
- Assess whether the product is microbiologically low risk
- Use ISO 29621 evidence for a justified low-risk decision
- Otherwise perform the reference preservation efficacy test
- Interpret results against the applicable acceptance criteria
- Investigate failures and reassess formula, process or packaging
- Retain protocol, raw data, calculations and approval records
Who Needs to Comply?
Cosmetic formulators, microbiology laboratories, quality teams, contract manufacturers and safety assessors evaluating whether a finished skincare or cosmetic product has adequate antimicrobial protection during intended use.
Key Requirements
Set the Test Article
Test a representative finished product and document formulation, batch, packaging and any factors that could affect antimicrobial protection.
Choose the Correct Route
Document whether the product qualifies as microbiologically low risk under ISO 29621; otherwise use the preservation efficacy test route.
Run a Controlled Challenge
Use a qualified method, defined microorganisms, sampling intervals, controls and recovery procedures appropriate to the formulation.
Interpret and Investigate
Compare the data with the applicable acceptance criteria and investigate any failure before making a safety or release decision.
Maintain the Evidence
Retain the approved protocol, organism and media controls, raw counts, calculations, deviations, conclusion and authorized review.
Implementation Roadmap
Define the product and risk route
Record the finished formula, manufacturing process, intended use, user population and packaging. Decide whether an ISO 29621 low-risk justification is supportable or a preservation efficacy test is needed.
Approve the protocol
Select a qualified laboratory, representative batch, organisms, method suitability controls, inoculation, sampling intervals, enumeration method and predefined acceptance criteria.
Run and review the study
Execute the challenge under controlled conditions, preserve raw data, calculate microbial changes and have qualified personnel review deviations and the conclusion.
Act on the result
Approve the evidence when criteria are met. If not, investigate formula, preservative availability, process, packaging and method factors, then document reformulation and retesting decisions.
Compliance Checklist
checklist Scope and protocol
checklist Laboratory controls
checklist Lifecycle decisions
ISO 11930 in the Skincare Microbiology Workflow
| Reference | Purpose | Use it for |
|---|---|---|
| ISO 11930:2019 | Evaluate antimicrobial protection | Risk route and preservation efficacy testing |
| ISO 29621 | Assess low microbiological risk | Justifying when the reference challenge test may not apply |
| ISO 17516:2014 | Assess microbiological quality | Finished-product limits and release evidence |
| ISO 22716:2007 | Control cosmetic manufacture | Preventing contamination through GMP |
Penalties & Enforcement
ISO 11930 is a voluntary test and evaluation standard, not a certification or approval scheme. A failed or unsupported preservation assessment can nevertheless undermine a product safety file, customer specification or market-law obligation and may require reformulation, retesting, withdrawal or recall.
Frequently Asked Questions
Is ISO 11930 the same as a cosmetic challenge test?
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It includes a reference preservation efficacy test, often called a challenge test, but it also provides a broader evaluation path that can combine test data with a microbiological risk assessment.
Must every skincare product undergo ISO 11930 testing?
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No. The standard excludes products justified as microbiologically low risk through the applicable risk assessment, including the route described in ISO 29621. The rationale must be product-specific and documented.
Which version of ISO 11930 is current?
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ISO 11930:2019, Edition 2, together with Amendment 1:2022, remains published as of 20 October 2026. ISO lists a replacement project under development, so teams should monitor the catalogue rather than treating a draft as final.
Does a passing ISO 11930 result prove the product is safe?
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No. It supports one part of the microbiological safety case. The complete decision also depends on GMP, microbiological quality, toxicological safety, ingredient restrictions, packaging, stability, intended use and target-market law.
When should the evaluation be repeated?
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Reassess after a material change to the formula, preservative system, raw materials, manufacturing process, packaging, intended use or other condition that could change antimicrobial protection.
Official Documentation
Official PDF for ISO 11930:2019
Official publication or summary for ISO 11930:2019
Official online resource
International Organization for Standardization (ISO) guidance and reference material
Implementation toolkit
Templates, guidance, or companion resources for ISO 11930:2019