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RS ISO 18415: 2017/Amd 1:2022
Cosmetics — Microbiology — Detection of specified and non-specified microorganisms

Abstract

This document gives general guidelines for the detection and identification of specified microorganisms
in cosmetic products as well as for the detection and identification of other kinds of aerobic mesophilic
non-specified microorganisms in cosmetic products.
Microorganisms considered as specified in this document might differ from country to country
according to national practices or regulations. Most of them considered as specified microorganisms
include one or more of the following species: Pseudomonas aeruginosa, Escherichia coli, Staphylococcus
aureus and Candida albicans.
In order to ensure product quality and safety for consumers, it is advisable to perform an appropriate
microbiological risk analysis to determine the types of cosmetic products to which this document is
applicable. Products considered to present a low microbiological risk (see ISO 29621) include those
with low water activity, hydro-alcoholic products, extreme pH values, etc.
The method described in this document is based on the detection of microbial growth in a non-selective
liquid medium (enrichment broth) suitable to detect microbial contamination, followed by isolation of
microorganisms on non-selective agar media. Other methods can be appropriate depending on the level
of detection required.
In this document specific indications are given for identification of Pseudomonas aeruginosa, Escherichia
coli, Staphylococcus aureus and Candida albicans. Other microorganisms that grow under the conditions
described in this document may be identified by using suitable tests according to a general scheme (see
Annex A). Other standards (e.g. ISO 18416, ISO 21150, ISO 22717, ISO 22718) may be appropriate.
Because of the large variety of cosmetic products within this field of application, this method might not
be suited in every detail to some products (e.g. certain water-immiscible products). Other methods (e.g.
automated) can be substituted for the tests presented here provided that their equivalence has been
demonstrated or the method has been otherwise shown to be suitable.

General Information

Code	Classification	Theme	Pages	Publisher	Availability
RS ISO 18415: 2017/Amd 1:2022	ADOPTED ISO STANDARDS	Chemical technology	33	Second Edition	Available