A technical resource from Wuhan Oule Chemical Co., Ltd.

The science ofcosmetic preservation.

Peer-reviewed guidance on preservative selection, challenge testing, and compliance across EU, US, and APAC markets — written for formulators, by chemists.

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Preservative Chemistry

Phenoxyethanol vs. ethylhexylglycerin: when to combine them

A mechanistic review of the two most common broad-spectrum partners in modern leave-on cosmetics, with a decision tree for when the combination is justified over phenoxyethanol alone.

Yang Ruosong · 12 min read