Formulating for dry skin: Making a body butter

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I know I keep saying the same thing, but when you make a product for dry skin you want to make sure you’ve chosen appropriate occlusive ingredients – allantoin, dimethicone, or cocoa butter – along with good emollients that contain linoleic acid, gamma-linoleic acid, or conjugated linoleic acid and good humectants. You want these things...

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Question: How do I know how much of an ingredient to include in a product?

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I can’t believe I haven’t answered this question yet, and I suspect that there is a post out there on this topic, but I figure we’ll take another look at this idea!  How do you know how much of an ingredient to include in your product? These are a few of the things I consider…...

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Confusion about cetrimonium chloride (updated)

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As you know, I’m a huge fan of cetrimonium chloride – short form, cetac – in my conditioners, and I seem to put it in every phase possible. But which is the best phase… Here’s the official word from the Handbook of Cosmetic Science & Technology, second edition, page 413… The length and number of...

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Formulating for dry skin: Moisturizers continued

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Wow, I’m really overscheduling myself when I don’t have time to write posts in the morning! I must work on my boundaries!  What else can we do with a moisturizer for dry skin? Yesterday we made a nice moisturizer filled with wonderful oils and humectants, and you can tweak this to your heart’s content. Let’s...

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Formulating for dry skin: Moisturizers

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How does a moisturizer differ from a lotion? A moisturizer is an emulsified product, like every other lotion, but they tend to have a higher water phase than other lotions. Generally moisturizers are 80% to 90% water, which means we have a 10% to 20% oil phase, which isn’t huge when you consider that we...

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