Ensuring preservative efficacy

Kevin Roden – Asia Pacific Regional Technical Manager, Thor Specialties

Studies conducted on personal care products in the 1960s and 1970s found up to 24% of unopened products were contaminated, mainly with Pseudomonas, while up to 49% of used samples were also contaminated. These studies highlighted the need for the incorporation of preservatives into water-based formulations along with improvements to manufacturing practices.

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