Shelf life: If you end up picking not so as to add a preservative on the serum the shelf existence will probably be two weeks and has to be saved inside the fridge. When you insert a preservative in your serum it can be employed for up to three months https://bookmarkprobe.com/story14955147/the-single-best-strategy-to-use-for-make-vitamin-c-serum-from-orange-peel