Vitamin C – Can it be mixed from a powder?

How effective is 100% Vitamin C powder compare to vitamin C serum? ie 100% L-ascorbic acid powder mix into sunscreen or moisturiser. Your answer will be appreciated. Many thanks. Sue

Sue – I’m going to assume that you are mixing the powder with water and keeping it no more than a week for each batch.  I’ve never seen a study on these but I think I wouldn’t mix it with sunscreen or moisturizers because it would change the pH of the Vitamin C which would alter drastically how easily it can be absorbed by your skin cells.  Also, the ingredients in the creams could interact with the Vitamin C in ways that are unpredictable.  Why not just mix it and put it directly on the skin, let it absorb a bit and then apply your moiturizer, etc.? Best, Dr. Irwin

Dr. Brandith Irwin, MD

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