Formulating Fundamentals Friday: How thickeners affect the properties of a lotion – stearic acid & lanolin alcohol (part one)

Welcome back to Formulating Fundamentals Friday! I’ve added a new section of the blog I’ve entitled Formulating Fundamentals where you’ll find these posts along with the other ones I’ve written about defining cosmetic chemistry terms. I also encourage you to have the glossary open as we work through this series as a reference. In part…...

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Formulating Fundamentals Friday: How thickeners affect the properties of a lotion – fatty alcohol

Welcome back to Formulating Fundamentals Friday! I’ve added a new section of the blog I’ve entitled Formulating Fundamentals where you’ll find these posts along with the other ones I’ve written about defining cosmetic chemistry terms. I also encourage you to have the glossary open as we work through this series as a reference. In part…...

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Pro tip: Allantoin goes into the heated water phase – not the cool down phase – of emulsions

On January 28 on this blog’s Facebook page, I shared the links to the post on allantoin from January 17th here on the blog, and an interesting discussion sprung up, which I thought I’d share here and add more of my thoughts and links because all of a sudden, people are using allantoin in the…...

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Formulating Fundamentals Friday: How emulsifiers affect the properties of a lotion – part two

In part one, we looked at substituting one oil or butter for another oil or butter in a lotion. In part two, we altered the viscosity by altering the oil phase. In part three, we took a look at how your choice of emulsifier alters the properties of a lotion, and made lotions with emulsifying…...

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Formulating Fundamentals Friday: How emulsifiers affect the properties of a lotion

Welcome to part three of this new series, Formulating Fundamentals! In part one, we looked at substituting one oil or butter for another oil or butter in a lotion. In part two, we altered the viscosity by altering the oil phase. Today, let’s take a look at how your emulsifier alters the properties of a…...

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Formulating Fundamentals Friday: Altering the viscosity by altering the oil phase

Welcome to this new series I’m calling Formulating Fundamentals Friday where I’ll be sharing all kinds of things I hope you’ll find useful in learning how to formulate your own products. If this is all completely new to you, check out the Beginners! Start here! section of the blog.  Last week, I introduced you to…...

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Formulating Fundamentals Friday: Substituting one emollient for another in a lotion! 

Welcome to this new series I’m calling Formulating Fundamentals Friday where I’ll be sharing all kinds of things I hope you’ll find useful in learning how to formulate your own products. If this is all completely new to you, check out the Beginners! Start here! section of the blog.  In my lotion formulas, you can…...

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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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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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