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Section: Cosmetic Ingredients > Preservation

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Influence of pH on the Preservative Boosting Effect of Chelating Agents

A system based on phenoxyethanol and ethylhexylglycerin (euxyl® PE 9010) from Schülke & Mayr is described here to boost the efficacy of preservatives. To substantiate its efficacy, the effects of the system were checked at pH levels of both 7.0 and 5.0.

Microbiological test methods for w/o formulas have raised questions in terms of their suitability. They also require a more critical view of the results than other product types. This first article in a two-part series reviews the limitations of such methods and options for their optimization. It also critically observes to what extent test results provide relevant information for an appropriate safety assessment. Part II, in August 2022, will explore a holistic approach to more accurately assess microbiological safety.

Determining Preservative Efficacy in W/O Formulas, Part I: Test Performance and Limitations

Microbiological test methods for w/o formulas have raised questions in terms of suitability. They also require a more critical view of the results than other product types. This first article in a two-part series reviews the limitations of such methods.

Inolex’s Lexgard Natural MHG MB is a multifunctional ingredient that can preserve products, control odor and impart anti-soaping properties in emulsions, as shown in a video.

[video] Inolex’s Lexgard Natural MHG MB Preserves, Controls Odor and Prevents Soaping

Inolex’s Lexgard Natural MHG MB is a multifunctional ingredient that can preserve products, control odor and impart anti-soaping properties in emulsions, as shown in a video.

The bigger impact is that concerns over the potential endocrine-disrupting effects of bisphenols will no doubt put other cosmetic ingredients with the same alleged effects front and center (again), drawing interest from regulators.

Endocrine Disruptors in the EU, SCCS Opinions and NGO Pressure to Crack Down

From November 2022–February 2023, organizations in seven European Union member states tested 121 products and found bisphenols of high concern in 47 of them, per Chemical Watch. NGOs are urging regulators to impose stricter regulation on all bisphenols.

The Cosmetics & Toiletries (C&T) Allē Awards bring behind-the-scenes beauty innovation into the spotlight. Learn more at AlleAwards.com.

What Beauty Innovations Qualify for the 2025 C&T Allēs? What Are the Requirements?

What entries compete in the C&T Allēs? From ingredients, blends and prototype/finished formulas, to test methods/tools, devices and digital tech, entries span the cosmetic R&D process. Read on for more and enter now - the deadline is Sept. 13!

Ct Alles 2026 Portal Launch Chemist Orange Bright

2026 C&T Allē Awards Portal is Open — Beauty Innovation Abounds: Show Us Your Stuff

With beauty innovation abuzz, especially around spring trade shows, Cosmetics & Toiletries is excited to open the 2026 Allē Awards submission portal. Show us what you've got!

The Required D-Value: Evaluating Product Preservation in Relation to Packaging and Consumer Use/Abuse

Cosmetic and pharmaceutical products are subject to microbial contamination and spoilage during use. In 1970, Halleck published the recommendations of the Preservation Subcommittee of the Toiletry Goods Association Microbiology Committee, which stated that preservation studies should consider product formulation, manufacturing conditions, packaging, product stability and continued effectiveness of the preservative system during the intended use by consumers.

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INOLEX Makes a Spectacle of Spectrastat G2 Natural MB's pH-neutral Preservation Strength

Spectrastat G2 Natural MB by INOLEX is a system for preservative-free cosmetic and personal care products. This alternative to other preservative-alternatives offers unique benefits include performance at a neutral pH.

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