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Sat Sep 05, 2015 1:49 am  |
I'm going to try the DIY serums, I want to make vit c serum and hylauronic acid serum.
I just have a few questions please.
Do I need a preservative in a basic vit c serum I assumed not as its acid.
What preservative can I use in hylauronic acid serum? I just want a really basic recipe as its my first attempt but have no idea about the preservative to use. |
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| Thu Dec 26, 2024 3:05 pm |
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