Peter Attia· MD
if your serum levels of vitamin C are high then your skin doesn't absorb topical vitamin C very well
The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
if your serum levels of vitamin C are high then your skin doesn't absorb topical vitamin C very well
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So they have shown that the level of vitamin C that you can achieve in the skin by topical application far exceeds what you can do by ingesting it. the amount you would have to ingest, sure, to get the right amount in the skin, you'd have GI issues, which that that would definitely make you quit.
the amount you would have to ingest. Sure. To get the right amount in the skin, you'd have GI issues, which that that would definitely make you quit.
So they have shown that the level of vitamin C that you can achieve in the skin by topical application far exceeds what you can do by ingesting it.