People in every group—even those who got a fake treatment—said their wrinkles looked better after 8 or 12 weeks, which suggests that the improvement might just be in their heads or because of the...
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Evidence from Studies
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Contradicting (1)
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Oral hyaluronan relieves wrinkles: a double-blinded, placebo-controlled study over a 12-week period
Randomized Controlled Trial
Human
2017Gold 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.