Sarah Vaughter answers questions about OwnDoc products
Forums => Dermarolling / Microneedling => Topic started by: skin101 on August 25, 2012, 05:25:07 AM
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Hi Sarah,
What is the shelf life of Vit C (L-Ascorbic Acid). I bought it last year (Oct, 2011) and I still have 2 packs.
Can I still use them?
Thanks.
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The shelf life of vit. C crystals is three years but in reality they will keep even longer.
Vit. C becomes unstable in a watery solution and that is why the vit. C serum has to be made fresh frequently, whereas the crystals themselves are stable.
You should keep them cool, dry, dark, and in a closed container (close the ziplock bag).