Shampoo bars: Please don’t use 100x or 200x aloe vera powder in them!

A woman wrote to me the other day to say her shampoo bars were soft and sticky. I asked her to tell me her exact formula, and it was identical to one of mine with one huge exception – she added 1% concentrated aloe vera powder, either 100x or 200x. Since then, I’ve read of...

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Surfactants: Cleansing descriptions and increasing mildness – analyzing surfactants

Thanks for sticking around to the end of this series. I know for some this might seem like a very dry subject and some of you are yelling at the screen for me to shut up about chemistry stuff and get to the formulas, but if you have a curious mind and want to learn...

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Surfactants: Cleansing descriptions and increasing mildness – almost there! 

Yeah, I know, you ask me the time, I teach you how to build a clock. But isn’t this all so much more fun than a sentence or two on the topic? In our post last Wednesday, we took a look at a few ways we might define what it means for a surfactant to...

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Surfactants: Cleansing descriptions and increasing mildness – protein denaturation, pH, and emollients

Three Ehrlenmeyer flasks sit on a lab bench. The first contains light pink liquid. The second, clear liquid. The third, bright pink liquid. This was a class on titration and the colours indicate how alkaline the liquid is.

In our post on Wednesday, we took a look at a few ways we might define what it means for a surfactant to be classified as gentle, mild, or harsh. Thursday, we took a look at how micelles, critical micelle concentration, and other ingredients have an impact on surfactant classification. On Friday, we took a look...

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Surfactants: Cleansing descriptions and increasing mildness – rinsability, films, and hard water

In our post on Wednesday, we took a look at a few ways we might define what it means for a surfactant to be classified as gentle, mild, or harsh. Thursday, we took a look at how micelles, critical micelle concentration, and other ingredients have an impact on surfactant classification. On Friday, we took a look...

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