Q&A: Using l-ascorbic acid in anhydrous and silicone based formulas

In the July Q&A, Karrye asked, You previously mentioned using L-Ascorbic acid in anhydrous formulas so that they could be used on wet skin, in order to reap the benefits of Vitamin C without the chance of it oxidizing. However, I don’t think you showed any recipe examples. Could you please? PS. I’m aware I…...

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Actives & cosmeceuticals: Vitamin C revisited

As a note, part of this post was originally shared on January 21, 2011, on the old blog. There are some great comments over there that I couldn’t bring over here, so I encourage you to check those out if you’re interested. Vitamin C is a water soluble anti-oxidant has been proven in studies to…...

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Questions from Patreon: Retin A, retinol, and retinoids (part two)

Last Thursday, we started looking at retin A, retinol, retinoids, Vitamin A, and carotenoids, so let’s resume that fascinating topic! In the August Q&A on Patreon, Mildred asked: Question pls: Can I use a glycolic toner followed by a Retin A cream? I read a blog that these two needs to be used on alternate days but I…...

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Questions from Patreon: Retin A, retinols, and retinoids (part one)

In the August Q&A on Patreon, Mildred asked: Question pls: Can I use a glycolic toner followed by a Retin A cream? I read a blog that these two needs to be used on alternate days but I can’t seem to find that writing any more.  And Mercedes asked: I would like to know more…...

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Weekend Wonderings: Adding Vitamin C to a product

In this post, A few thoughts for a lazy Saturday, Fuchia asks: A bit off topic but I’m curious about making a Vitamin C cream. I have a face cream recipe I make now and love (it does not contain Vitamin C but uses Optiphen Plus as a preservative) and keep reading online that you can…...

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Vitamin C

I recently bought some Vitamin C in the hopes of using it in my products. So let’s see what this vitamin brings to the party! Vitamin C is a water soluble anti-oxidant has been proven in studies to be an anti-inflammatory that can stimulate collagen formation, lighten skin, treat hyperpigmentation, and heal wounds. It’s water…...

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Carotenoids

Carotenoids are tetraterpenoids, which are a large and varied class of hydrocarbons produced by plants, particularly conifers (wow, that sounded text-booky, eh?) They are either carotenes (oil soluble) or xanthophylls (more polar, water soluble with oxygen functional groups) with 40 carbon atoms. I’ll be going into more detail about terpenes and terpenoids in the near…...

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Vitamin A

Vitamin A – what is it good for in bath & body products? It’s an oil soluble molecule that can improve skin barrier function, increase cell proliferation, increase thickening of the skin, and increase collagen production. It can also help increase skin’s water retention, and it may be effective in preventing, retarding, or restoring changes…...

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