Q&A: Does isododecane or propanediol 1,3 go into the heated or cool down phase? What does lemon shine smell like? Questions about my epic rinse off conditioner formula!

In the monthly Q&A, Susan asked, I recently made your Epic Rinse Out Conditioner and am very happy with it but I have a couple of questions … If I’m correct, isododecane is a volatile ingredient so I’m wondering why it’s added to the warmed water phase rather than at cool down. Also, I’ve seen propanediol...

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Demythifying the myths: A super simple method to melt BTMS in a double boiler!

There’s this weird idea out there in the DIY world that we can’t easily melt ingredients that contain behentrimonium methosulfate (BTMS), found in Incroquat BTMS-50, Incroquat BTMS-25, Rita BTMS-225, and many BTMS emulsifiers, in a double boiler. It seems that no matter how times I demonstrate it in a class or Zoom meeting or post,...

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Q&A: Can I use tetrasodium EDTA in an acidic formulation? If so, how?

In the monthly Q&A, Free Drey asked, Hi Susan, I had some questions about Tetrasodium EDTA. I know it’s suggested to be used in high alkaline formulations, whereas Disodium EDTA is better for pH under 8. If I only had Tetrasodium EDTA, could I use it in formulations under pH 8 if I adjusted the pH...

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Creating a blueberry, carob, yucca & cornsilk conditioning shampoo for oily hair (part four): The formula and process! 

Welcome back to this four part series in which we’re making a shampoo filled with a veritable botanical bounty of fantastic ingredients for normal to oily hair! In part one, Creating a blueberry, carob, yucca & cornsilk conditioning shampoo for oily hair (part one): Overview and choosing surfactants!, we looked at what it meant to...

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Creating a blueberry, carob, yucca & cornsilk conditioning shampoo for oily hair (part three): Product protecting ingredients! 

Six plastic bottles containing preservatives sit atop a metal plate on a digital scale

Welcome back to this four part series in which we’re making a shampoo filled with a veritable botanical bounty of fantastic ingredients for normal to oily hair! In part one, Creating a blueberry, carob, yucca & cornsilk conditioning shampoo for oily hair (part one): Overview and choosing surfactants!, we looked at what it meant to...

This content is for Foundation, Formulation, and Innovation members only.
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