Is Vitamin C also a pro-oxidant?

Hi! I am seeing raves about topical vitamin C as an excellent antioxidant for skin. However, without being an expert, and if I am even making sense, what happens to vitamin C after it donates to a free radical/ros? I am definitely not a chemist, but after a few basic organic chemistry courses some of this research is making sense (I.e. the Fenton Reaction), but again I don’t have enough knowledge to know if this process is potentially harmful on the skin, and if I should continue use of topical Vit C or save my money from all of the marketing raves :)

I’ve heard Vitamin C's ability to readily donate electrons, and thus acting as an anti-oxidant; however does this also mean that it readily reacts with other molecules after that process? Does the cycle continue such as Vit C then scavenging a donor/nearby cells or molecules (redox)? In the presence of catalytic metals (possibly in makeup other skincare products), could vitamin C react with those metals causing a pro-oxidant effect? I thought vitamin C reacts with oxygen, then producing superoxide that subsequently dismutes to produce harmful by-products such as hydrogen peroxide...the rest gets over my head but I am not sure now if the cons outweigh the benefits.

Comments

  • No, Vitamin C is not pro-oxidant. Vit C (Ascorbic Acid) oxidizes to Dehydroascorbic Acid which is a stable molecule. It will not react further under normal circumstances.

    https://en.wikipedia.org/wiki/Dehydroascorbic_acid

    Of course, the reality is that most of the Vitamin C containing cosmetics actually contain mostly Dehydroascorbic Acid and you won't see much additional benefit in using them.
  • Wow this makes me feel so much better! Thanks Perry!!
  • edited June 20
    Vitamin C is antioxidant. It protects you from harmful damage of oxidation. Vitamin C is water soluble that means even if you take more quantity it will not be stored in your body. It will be flushed out.
  • Yeah the Vitamin C is an antioxidant that keep protects us form any harmful damage of oxidation ... Vitamin C is very good to if you have a low PB then it help you to make it stable...
Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!