Acids, bases, and pH – oh my! A series on testing, measuring, and adjusting pH in our products. Part one: The chemistry of acids & bases

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Welcome to part one of what is looking to be about a ten part series, not including the reviews of various pH meters! We’ll be taking a look at at the chemistry of acids and bases, how pH meters work, how pH strips work, how to measure and adjust the pH of our products, reviews...

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Q&A: Which preservative works best with alkaline liquid soap? Let’s talk about the chemistry of soap, pH, and preservatives!

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In the June Q&A, smc asked, Preservatives for liquid soap. I’m playing with liquid soap make, and due to the high percentage of water I’ll need a preservative. What preservatives work well in a high pH environment and doesn’t have a horrible scent? Thanks.  As a quick note before we start, I have pages where...

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Weekday Wonderings: Using urea, finding data sheets & formulas, ULProspector, and cutting the ends of tubes for pumps or misters.

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Just a few thoughts that didn’t seem to fit into any other posts… How to formula with urea?  Please please please do not use urea in your products if you’re not creating a pH buffer – using something like sodium citrate and citric acid or sodium lactate and lactic acid – because it can cause...

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Article link: Into the weeds: Walking the regulatory line of CBD

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I received an newsletter today from a supplier that included some kits to make bath bombs or lotion bars that included CBD, so I wanted to share this article from this month’s C&T… Into the Weeds: Walking the Regulatory Line of CBD in Cosmetics. It’s written from an American point of view, but I think...

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Welcome to July 2019!

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Three years ago today, I started the subscription component of the blog through Patreon. Doing this allowed me to stay home with my mom as she suffered from lung cancer, and it allowed me to stay home after she died to grieve our loss. It was the greatest gift we could have received, and I … Read more