Surfactants

Weekday Wonderings: Can we make a shampoo bar without cocamidopropyl betaine?

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In this post on shampoo bars, Bella asked: Is it ok to make a syndet shampoo bar without cocamidopropyl betaine? Everyone makes it seem like an impossibility, but there is a company that makes them and they are sellilng very well and I don’t see that ingredient in their product. The company is Ethique, here...

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Weekday Wonderings: Adding SCI to oils to create a cleanser? (updated)

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I’m trying so hard to get through your comments, but I’m still back in June. There are just so many good ones, it’s hard to answer them with a quick comment or two. In this post, Formulating a Cream Cleanser for dry skin, Afriyie’s Faith asked: Hi Susan, thank you so much for creating an awesome...

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Question from Patreon: Are there any green alternatives to SLSa in a bath bomb?

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In July’s Q&A on Patreon, Ingrid asked: I’m investigating bath bombs and  more natural alternatives to using SLSa for bubbles. I’ve seen bath bomb ingredients listing decyl glucoside as a foaming agent. It’s also supposed to be a solubiliser. Can I use it (in liquid form) instead of the Polysorbate 85 and SLSa? If not,...

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Question from Patreon: Can cocamidopropyl betaine be used as the only surfactant in a shampoo?

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In the July Q&A on my Patreon feed, Doris asked: I fell down this particular rabbit hole because I wanted to duplicate a simple shampoo that I love. (It’s this shampoo – Dirty Girl Farm, Bamboo Shampoo.)  I think the order of the ingredients is off, but according to the label they are: water, glycerin,...

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Weekend Wonderings: How to include an oil soluble ingredient in a surfactant based product, like a shampoo?

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In this post, Creating a daily use shampoo, longqtruong asks, You have dimethicone in your daily shampoo formula which is not water soluble. Do we need a solubilizer or emulsion system to make this work? The short answer is probably not. The longer answer is as follows… You’re right: The forms of dimethicone I’ve been...

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