sodium ascorbate
Vitamin C is a form of vitamin C, which has antioxidant effect. Vitamin C is not easy to maintain stability, and packaging is very important. Vitamin C's acidity may cause skin irritation.
ref.
Journal of Investigative Dermatology, February 2002, pages 372–379
Advances in Experimental Medicine and Biology, 2002, number 505, pages 113–122
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