| http://www.w3.org/ns/prov#value | - Vitamin C serums are very effective in boosting the skin's self defense mechanisms when dealing with these free radicals.Vitamin C in general is a highly unstable vitamin but in the salt form of Sodium Ascorbyl Phosphate that Xfacio Labs uses in their serum, it is highly stable and not prone to quickly breaking down like other forms of Vitamin C used by other manufacturers.
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