Misconceptions about pH: It isn’t a series of steps

I shared this on my blog Facebook page, but didn’t share it here. Sorry about that. I encourage you to check out some of the comments as there are some interesting ones, and some from my bestest ever friend, Hamsa Ryuugan posing as Claudia Celeron. (He’s blocked me, which is just so sad and pathetic,...

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Surfactants: Cleansing descriptions and increasing mildness – analyzing surfactants

Thanks for sticking around to the end of this series. I know for some this might seem like a very dry subject and some of you are yelling at the screen for me to shut up about chemistry stuff and get to the formulas, but if you have a curious mind and want to learn...

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Surfactants: Cleansing descriptions and increasing mildness – concentration and altering the shape, size, and packing of micelles

In our post on Wednesday, we took a look at a few ways we might define what it means for a surfactant to be classified as gentle, mild, or harsh. Thursday, we took a look at how micelles, critical micelle concentration, and other ingredients have an impact on surfactant classification. And on Friday, we took a...

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Q&A: Do oils have a pH? Can we test the pH of an anhydrous product? If so, what’s the procedure? And a little on pH meters… 

In the October Q&A, Michelle asked: I am wondering if one can test the pH of an anhydrous product? I am making a lovely anhydrous deodorant and would like to proceed with some testing/data gathering. Which meter would be most useful? I have the Jenco Vision Plus but products need to be diluted in water for...

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Chemistry: Atoms, moles, and molecular weight

I realized there were a few more terms I had to share before we get into the natural gum thickeners. Plus, I needed to give you the date of the quiz. Nah, just kidding…or am I? 🙂 On September 7th, we started this series off by looking at why xanthan gum might pill or ball...

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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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Considering the effect of different combinations of oils & butters in a basic lotion

Let’s take some time today to see how this all comes together in choosing butters and oils for our lotions! Defining some scientific terms: Solubility, viscosity, surface tension, and interfaces Defining some scientific terms: Contact angle, wetting, refractive index, and specific gravity Defining some cosmetic chemistry terms: Spreadability, play time, cushion, drag, and melt point...

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Why is the cosmetic formulator concerned with solubility, viscosity, surface tension, contact angles, wetting, refractive index, specific gravity, spreadability, play time, cushion, drag, and melting point?

I thought we’d take some time to process what we’ve learned over the last few days about these very interesting concepts by considering some emollient combinations. Defining some scientific terms: Solubility, viscosity, surface tension, and interfaces Defining some scientific terms: Contact angle, wetting, refractive index, and specific gravity Defining some cosmetic chemistry terms: Spreadability, play...

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