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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Q&A: Why are we using l-ascorbic acid in an oil based serum? Can it be used with niacinamide?

In the December Q&A Carol asked: In regards to the Vitamin Packed Facial Serum found in your latest e-zine, if l-ascorbic acid is water soluble, how does it do in an oil serum?  The product I have is about the consistency of sand (not very soft) and I’m trying to find ways to use it up.  Also,…...

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