Viscosity: How to measure it?

Let’s take a minute to talk about viscosity. What is viscosity? The easy way to think about viscosity is about the thickness of a fluid. Water is thin, so it’s low viscosity, while glycerin is thick and has higher viscosity. I liked this definition that “Viscosity is resistance to flow” (reference), that more viscous things require...

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Further adventures in cosmetic chemistry: What’s up coming next! 

As I was writing up another variation of the Saje Psoria Ease Healing Treatment Lotion about incorporating rheology modifiers into our lotions – things like xanthan gum or gelling agents – I realized I needed to stop so I can finish the series I was sharing about some of the cosmetic chemistry terms I was...

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Chemistry: Rheology modifiers – categories and defining a few more terms

On September 7th, we started this series off by looking at why xanthan gum might pill or ball on your skin when used in lotions. Then we started this series, for which I’ve also created a glossary of terms as we’ll be using them a lot in the future… Defining some scientific terms: Solubility, viscosity,...

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Chemistry: Rheology modifiers – Newtonian and non-Newtonian fluids

On September 7th, we started this series off by looking at why xanthan gum might pill or ball on your skin when used in lotions. Then we started this series, for which I’ve also created a glossary of terms as we’ll be using them a lot in the future… Defining some scientific terms: Solubility, viscosity,...

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Chemistry: Rheology modifiers – Introduction and defining some terms: Yield stress and shear

On September 7th, we started this series off by looking at why xanthan gum might pill or ball on your skin when used in lotions. Then we started this series, for which I’ve also created a glossary of terms as we’ll be using them a lot in the future… Defining some scientific terms: Solubility, viscosity,...

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