Q&A: Let’s define some acronyms!

In the December Q&A, Marta suggested, The glossary under Resources is a wonderful thing. Would you consider creating a list of the acronyms that you’ve used in your writing (e.g. AHA, DLS, CMC, GLA, HEC, INCI, MSM, NF, NMF, PF, SC, TEWL, TJ, ARGH)? You always define the acronym when it is first introduced. But,…...

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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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Defining some cosmetic chemistry terms: Spreadability, play time, cushion, drag, and melt point

Let’s spend a little more time getting to know some formulating terms and concepts! Check out these posts from Saturday and Sunday… Defining some scientific terms: Solubility, viscosity, surface tension, and interfaces Defining some scientific terms: Contact angle, wetting, refractive index, and specific gravity As we work through these definitions, think about how these ingredients…...

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Defining some scientific terms: Contact angle, wetting, refractive index, and specific gravity

Yesterday, we took a look at some concepts we’ll need when discussing silicones, esters, and thickeners for surfactants. Today, let’s take a look at a few more. Contact angle: “The contact angle is defined as the angle the water makes with the surface. In this illustration, a low contact angle (θ<90 ̊) means the surface…...

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Defining some scientific terms: Solubility, viscosity, surface tension, and interfaces

I’ve been trying to write some posts on silicones, surfactant thickeners, and esters for quite a while now, and I keep running into the issue that I need to define a bunch of terms before I can start. As I have a question from someone from the May Q&A that hasn’t been answered yet, I…...

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Weekend Wonderings: Definitions for products?

In this post, Why did I buy this and what can I do with it? Foaming bath butter, N. Bax asks: Please, will you go through what the textual and other differences are for the following body moisturizers :Milk-up to 90% water, super thin lotionLotion-up to 70% water, Crème-up to 10% water, very thick “lotion” w/1…...

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