re: Your skin is not like the digestive tract: it doesn’t have the acids and enzymes that will break down mineral ascorbates.... Only ascorbic acid or dehydroascorbic acid will work.
Ascorbic acid is Hydrogen ascorbate and like mineral ascorbates such as MgAscorbate, CaAscorbate will dissociate in water into a cation (H+) and anion ascorbate(C6H7O6-). You still wind up with anion ascorbate with a negative charge so I am not sure if it will penetrate skin.
Dr J Wright suggests using a penetration enhancer such as DMSO to carry the vit C in.
Anyone know a good penetration enhancer.
Dehydroascorbate is made in your gut. It is simply oxidized ascorbic acid. I suspect if you left ascorbate in solution exposed to air it would oxidize into dehydro ascorbate.