• Formulating

  preservative system for vitamin C serum

  Posted by mhart123 on January 29, 2020 at 5:27 pm

  I am working on a 20% vitamin C serum and the preservative system they want to use is potassium sorbate and sodium benzoate.  We are using ascorbic acid and I read a few times now that with sodium benzoate it can cause benzene to form.  I tried to do some research on it but have not found any legit research when it comes to cosmetics.  Can anyone offer some insight please.. should I switch preservative systems to be safe?

  mhart123 replied 4 years, 3 months ago 1 Member · 0 Replies
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