Vitamin C has a brief shelf daily life. It may speedily oxidize and alter its colour and physical appearance. This renders the products totally useless. Thanks for the great recipe, I have just one dilemma, can we make Vitamin C serum using Ascorbic acid with witch hazel rose water(it's rose https://7figurebm.com/how-to-make-vitamin-c-serum-from-orange-peel/