Chemistry

(Long) Weekend Wonderings: Altering the pH of our products, freezing fragrance oils, and using butylene glycol as a co-preservative

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ALTERING THE pH OF OUR PRODUCTSIn the Weekend Wonderings comment post, Liz asks: First off I have to say your blog is so informative- you are my bath and body hero! And I have a question for you, with summer coming up I wanted to make a sunless tanning lotion. I bought some Dihydroxyacetone and Erythrulose...

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Physics Friday: Shear

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If I thought I was scaring you with Chemistry Thursday, I must be terrifying you with Physics Friday! Please keep reading…it’s really interesting and relevant stuff!  Recently someone asked me if using a giant mixing device on a drill was a good idea for larger batches of products! (See this post…) He brought up the...

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Chemistry Thursday: The Bancroft rule

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While looking at the comments section looking for questions I could answer, I found a link to the Bancroft rule, and I thought I should post it here. (I can’t remember who suggested this, sorry, but you are awesome!) The Bancroft rule states: “The phase in which an emulsifier is more soluble constitutes the continuous...

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Chemistry Thursday on Friday: Let’s take a look at pH

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pH is so important when it comes to creating rinse off and leave in products, especially facial products or those based on foaming and lathery surfactants. Using a product with an out of whack pH on our skin can lead to an increase in scaling, a decrease in hydration, and a possible increase in bacterial...

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Cosmeceutical: Revital-Eyes

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As I mentioned in yesterday’s eye cream post, I wanted to use an ingredient from the Formulator Sample Shop called Revital-Eyes (INCI: Water and Lactobacillus Ferment Lysate Filtrate, Camiellia sinensis leaf Ferment Filtrate, Punica granatum Ferment Filtrate, Caffeine Ferment Lystate Filtrate). I was intrigued by the various components in this ingredient and thought I’d take...

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