quantitative
Analysis v1
Strong Opposition
Taking astaxanthin as a supplement might help your skin hold onto moisture better - one study showed people's skin lost about half less water after taking it, but there wasn't enough research to combine those results together.
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39
Evidence from Studies
Supporting (0)
0
Community contributions welcome
No supporting evidence found
Contradicting (1)
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Community contributions welcome
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Systematic Review and Meta-Analysis on the Effects of Astaxanthin on Human Skin Ageing
Systematic Review With Meta-Analysis
2021 Aug 24The study tested oral astaxanthin (same as the claim), but looked at skin moisture content rather than specifically transepidermal water loss. It found astaxanthin helped with moisture, but doesn't prove the specific 49.52% TEWL reduction mentioned in the claim.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.