Surfactants

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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Weekday Wonderings: Reading the INCI names of surfactants?

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In this post, Surfactants: A short guide to lathery, foamy, bubbly things, Renie asks: When I look up “BSB” and find this written on your blog “BSB (PEG-80 Sorbitan Laurate, Sodium Trideceth Sulfate, Cocamidopropyl Betaine, Disodium Lauroamphodiacetate, PEG-150 Distearate, Sodium Laureth-13 Carboxylate, Quaternium-15, found at Voyageur)”…..I take it to mean that all of the names...

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Weekday Wonderings: Reading INCI names

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In this post, A conditioning shampoo with SCI, Synara asks: Just wondering: I only have Amphosol CG and cocamidopropyl betaine. Can I make a shampoo with these surfactants? The short answer is no. And that’s because you actually only have one surfactant because Amphosol CG is cocamidopropyl betaine as made by Stepan, and it’s such...

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Newbie Tuesday on Wednesday: Adding botanical extracts to your facial cleansers (part one)

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I’m a big fan of using powdered extracts to add some extra oomph to my facial cleansers. They tend to be inexpensive – for instance, $3 to $5 for 10 grams – and we only need a bit to go a long way. Let’s take a look at these botanical extracts and see how they...

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