Chemistry

Viscosity!

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In these posts on surfactants I’ve been writing recently, I’ve mentioned viscosity quite a lot, so I thought we should take a look at this concept. The easy way to think about viscosity is about the thickness of a fluid. Water has low viscosity while something like glycerin has a higher viscosity. I liked this...

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Question: How can we add a cationic polymer to an anionic product, like shampoo, body wash, or facial cleansers?

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I can’t remember who asked it where, but someone asked me: How can we add a positively charged or cationic ingredient like polyquaternium 7 or Honeyquat to a negatively charged or anionic surfactant blend, like a shampoo or body wash? Great question! Let’s recap a bit of the chemistry for a second. (Check out this...

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Question: What is the meaning of positive or negative charge? Cationic, anionic, and non-ionic charges

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In this post, How can we adapt our formulas to be more natural: Gelling agents, Catherin asked: What is the meaning of positive and negative charge? I wrote about this topic in this post on the blog – Anionic, cationic, and non-ionic – but I realized I’ve learned so much since 2011 and there are...

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