A cosmetic product that complies with microbiological specifications after production is not necessarily microbiologically stable throughout its shelf life and consumer use<\/b>.<\/p>\n
Each time a product is opened, it is exposed to microorganisms through air, packaging, and consumer contact<\/b>. Therefore, it is not enough for a product to be microbiologically clean at the time of manufacture\u2014the preservative system must also remain effective against contamination throughout the product’s intended period of use.<\/p>\n
For this reason, an initial microbiological analysis<\/b> should be performed before the Challenge Test<\/b> to verify the product’s baseline microbiological quality.<\/p>\n
At Bilim Laboratory<\/b>, the Challenge Test process follows this approach. Products that successfully pass the initial microbiological assessment proceed to Challenge Testing<\/b>, and the final report includes both the preliminary microbiological analysis results<\/b> and the Challenge Test results<\/b>.<\/p>\n
Under ISO 11930<\/b>, the product is intentionally inoculated with the following challenge microorganisms:<\/p>\n The preservative system is evaluated based on its ability to reduce these microorganisms on Day 7, Day 14, and Day 28<\/b>, with results interpreted according to Criterion A<\/b> or Criterion B<\/b> of ISO 11930.<\/p>\n Challenge Testing supports:<\/p>\n Challenge Testing<\/b> is one of the key analyses supporting the Product Information File (PIF)<\/b> for cosmetics containing preservative systems and is an important requirement for regulatory compliance.<\/p>\n For more information about Challenge Testing<\/b> or to submit samples for analysis, please contact us.<\/p>\n","protected":false},"excerpt":{"rendered":" A cosmetic product that complies with microbiological specifications after production is not necessarily microbiologically stable throughout its shelf life and consumer use. Each time a product is opened, it is exposed to microorganisms through air, packaging, and consumer contact. Therefore, it is not enough for a product to be microbiologically clean at the time of […]<\/p>\n","protected":false},"author":10,"featured_media":3134,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[47],"tags":[],"class_list":["post-3136","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"acf":[],"yoast_head":"\n\n
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