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Subscribers’ Q&A and Discussion: What’s the effective level of ingredients? And thought about using tiny amounts

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Amber is on fire this week! In Potential duplication of L’Occitane Immortelle Divine Cream (part four), she shares: I have to agree with the rant about products that contain tiny bits of this and that. I always, always wonder what the effective level is of each ingredient? I know some things are very effective at very low...

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Subscribers’ Q&A: Is there a benefit to mixing different molecular weights of hyaluronic acid?

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In the June Q&A, Charlette asked: I am confused about using low and high molecular HA. I understand that the low weight doesn’t gel – but has better penetration. Is it possible to use both low AND high weights in a formula? I like the gelling of the high molecular (especially in toner–gives a bit of...

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Subscribers’ exclusive: Why do commercial products use several different preservatives?

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In the July Q&A, After doing ingredient studies on some of my favorite high end organic products (Tata Harper, Eminence, Tracie Martin), I’m finding that, more often than not, several different emulsifiers, thickeners and preservatives are used in the same formulation. This mystifies me! Why don’t they pick one? I understand using several different humectants, emollients,...

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Subscribers’ exclusive: Why do commercial products use several different emulsifiers and thickeners?

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In the July Q&A, After doing ingredient studies on some of my favorite high end organic products (Tata Harper, Eminence, Tracie Martin), I’m finding that, more often than not, several different emulsifiers, thickeners and preservatives are used in the same formulation. This mystifies me! Why don’t they pick one? I understand using several different humectants, emollients,...

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For my subscribers $3 and up, here’s a discount code for my new e-book, Shampoo bars you will love

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I’ve just released a special issue of Adventures in Cosmetic Chemistry: Shampoo Bars You Will Love: Creating pH balanced bars. This is not this month’s e-zine; this is a special one I decided to write in light of all the shampoo bar formulas I’m seeing lately that aren’t pH balanced. The write up: This new,...

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