causal
Analysis v1
Strong Support
Taking 5 grams of collagen pills every day for three months might help reduce redness in your face and make your skin tone look more even. This could happen because the collagen calms inflammation or changes how blood flows to your skin.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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Effect of Reducing Pigmentation by Collagen Peptide Intake: A Randomized, Double-Blind, Placebo-Controlled Study
Randomized Controlled Trial
Human
2022 JulTaking 5 grams of collagen peptides every day for three months was found to significantly reduce facial redness in healthy adults, supporting the idea that oral collagen can help improve skin tone.
Contradicting (0)
0
Community contributions welcome
No contradicting evidence found
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.