Preservatives

Preservatives: Why I don’t recommend Geogard preservatives…

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An infographic describing the processes required for hurdle technology. these include the type of emulsion, reducing water activity, pH lower than 5 or higher than 10, using preservatives, choosing packaging that is more air tight, and following good manufacturing processes.

I’m sharing this post now because it always comes up in the Zoom workshops, and I want to make the handout shorter!  I don’t recommend either of these Geogard preservatives because they’re ineffective. They perform very poorly, even for professional manufacturers, and if you use them with the formulas we’re sharing there, they will very...

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Why are we adding some ingredients to the cool down phase? Why do my emulsions lose viscosity when I add some preservatives? How do I make it not lose viscosity? (Part two)

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A close up diagram of a micelle. The oil is in yellow, the emulsifier has a red head, and the OH is the hydroxyl group sticking out into the blue water.

Welcome back to part of two of this short series in which we’re looking at why we might add some ingredients to the cool down phase of a formula. In part one, we looked at why we added hydrolyzed proteins, mixed tocopherols, actives & cosmeceuticals, fragrance oils, and essential oils to the cool down phase...

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Q&A: Using surfactants in a foamy, bubbly, lathery™️ formula as solubilizers for small amounts of oil

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In the monthly Q&A, Susan asked, …regarding Jeecide CAP-5 in a surfactant system … In your Apple A Day cleanser you say it’s ok to use CAP-5. Is that because of the surfactants used, the Olivem 300 or the combination of both products in the same formulation? I’m really wondering whether the inclusion of Olivem 300...

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Demythifying the myths: Are Germall Plus and Germaben II preservatives banned?

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Six plastic bottles containing preservatives sit atop a metal plate on a digital scale

You may have heard Washington state, USA, has banned Germall Plus (liquid and powder, Germaben II, and TRIstat D2, so let’s get into what all of this means. Before we start… You can learn even more in the massive preservatives section of this site, found under the “ingredients” tab in the menu bar. I’ve written...

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Q&A: Can I use Jeecide CAP-7 in a water based serum? How would I use it?

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In the monthly Q&A, Arianna asked, I just discovered Jeecide CAP-7 on your site and I am very intrigued and excited to try it! I have been using Leucidal SF MAX, but I want to use something more legitimate given everything I have been reading about it recently, including your posts. I am hoping that...

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