An aside on rheology modifiers: Wetting, dispersing, and hydrating

As you saw in this post recently – magnetic stirrer with hot plate – we heated our water phase that included hydroxyethylcellulose (HEC) on the magnetic stirrer with hot plate as it needs both agitation and heat to fully hydrate this starch. Why did we need to do that? It’s the idea that thickening ingredients…...

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Chemistry: Formulating with pyrrolidine carboxylic acid (PCA) – zinc PCA

We find this compound, pyrrolidine carboxylic acid (PCA), with sodium or zinc as a salt we can use in our products, and as a component in the natural moisturizing factor of our skin. It’s a type of salt, which means it’s an electrolyte, so it can mess with the viscosity of our gels, emulsions, and…...

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Chemistry: What’s a salt?

What exactly is a salt? “A salt is a chemical compound consisting of an assembly of cations and anions. Salts are composed of related numbers of cations (positively charged ions) and anions (negative ions) so that the product is electrically neutral (without a net charge).” (Reference) If you’ve taken my introduction to chemistry course – free…...

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Acids, bases, and pH – oh my! Creating a light, non-greasy summer weight lotion with Varisoft EQ 65 (part three, formula and pH)

If you want to catch up on the acids, bases, and pH – oh my! series, please visit the pH & pH meter section of the blog!  On the 7th, we created the water phase of this light summery lotion with Varisoft EQ 65, and yesterday, we looked at the oil phase and considered which…...

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Acids, bases, and pH – oh my! Creating a light, non-greasy summer weight lotion with Varisoft EQ 65 (part two, the oil phase)

Let’s pick up where we left off yesterday in creating this light, non-greasy summer weight lotion using Varisoft EQ 65. We figured out what we wanted to include in our water phase, so let’s take a look at the oil phase. As I mentioned yesterday, I’m using Varisoft EQ 65 as the emulsifier to create a…...

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Acids, bases, and pH – oh my! Creating a light, non-greasy summer weight lotion with Varisoft EQ 65 (part one, the water phase)

I hate summer so very much, but I’m handling it far better this year because we just had central air conditioning installed, and it can get so chilly, I need to put on a light cardigan. (I’m the type who wears shorts all year ’round, so this is a big big deal!) But I know…...

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Acids, bases, and pH – oh my! A series on testing, measuring, and adjusting pH in our products. Creating a facial cleanser with decyl glucoside (part two – the formula!)

Thanks for joining me today to create this foaming facial cleanser with decyl glucoside, which we’ll then test with our pH meters and strips! I’m so excited to share this all with you, so let’s get right to the formula, then the process! Yay! If you’d like to catch up on all the posts in…...

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Acids, bases, and pH – oh my! A series on testing, measuring, and adjusting pH in our products. Creating a facial cleanser with decyl glucoside (part one)

This is a bonus formula I teach during my eco facial classes at Voyageur Soap & Candle to demonstrate the fun of testing and adjusting the pH of a cleanser. I call this one my sulfate-free, ECOcert foaming facial cleanser with decyl glucoside, which kinda describes it really well as it contains decyl glucoside as…...

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Acids, bases, and pH – oh my! Part four: Testing our products with pH meters

In part one of this series, we took a look at the chemistry of acids and bases. In part two, we took a look at how pH strips work. In part three, we reviewed some of the pH strips I’ve played with in my workshop. Today, let’s take a look at how to test our…...

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Acids, bases, and pH – oh my! An aside: Creating pH adjusting fluids

Posts in this series: Acids, bases, and pH – oh my! A series on testing, measuring, and adjusting pH in our products. Part one: The chemistry of acids & bases Part two: How do pH strips work? What’s a pH indicator? Part three: Reviewing pH strips I thought I’d written this up somewhere, but I…...

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