pH

Demythifying the myths: You don’t need to pH test and adjust your formula after the addition of every ingredient!

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It feels like there’s a lot of misinformation being spread about how to test and adjust pH when making a formula – emulsion, cleansers, body washes, shampoos, conditioners, and so on – and I thought I’d share some good information with you. Related section: pH & information about pH meters, always found under the “resources”...

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Tips & techniques: You don’t need to test and alter the pH of an emulsion with a few exceptions…

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Welcome back to another instalment of tips & techniques! I thought I should create a separate and updated post on this topic because I see people going through all the work to test and alter pH for emulsions that are just fine on their own. As you’ll see, most emulsifiers are designed to create formulas...

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Tips & techniques: Testing and adjusting the pH of a emulsion with a pH meter

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Welcome to this detailed page on how to test emulsions – like lotions and conditioners – with a pH meter! If you’d like to read a longer post with even more information, you can find it here – Acids, bases, and pH – oh my! Part four: Testing our products with pH meters!  If you’d like...

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Q&A: Why is there white sediment at the bottom of my foaming face wash bottle?

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In the monthly Q&A, Chavi asked, Hi Susan! I made the attached formula for a foaming face wash. I needed to adjust pH and I did so using some citric acid solution. The next day, I noticed some white settling on the bottom; it disperses when shaken but then resettles. Any idea what it is or why this...

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Q&A: How would you modify a shampoo bar formula to be a “no more tears” product? Part five, testing and alter the final pH

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Welcome to part five of this series on how we might create a “no more tears” kind of shampoo bar using various anionic, non-ionic, and amphoteric surfactants. In part one, we reviewed the surfactants that Alexander noted she has in her workshop – sodium cocoyl isethionate (SCI), foaming apple surfactant, decyl glucoside, and Cocamidopropyl Betaine –...

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