Chemistry Thursday: Why oil and water don’t mix or more on solublity

Mixing two things is all about solubility. If we say that something is water soluble, it means that it will mix or dissolve in water. If we say something is oil soluble, it means it will mix or dissolve in oil. If we try to mix an oil soluble thing in water, it will not...

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Chemistry Thursday: Review before we get into new stuff next week

There seems to be some interest in learning more chemistry (yay!), so I’m resuming the Chemistry Thursday posts next week. In the meantime, here are a few posts that might interest you! The atom! What is an atom? What’s a proton, a neutron, and an electron? The molecule! What is a molecule? Ionic bonding and...

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

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

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

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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