Taking a daily supplement of hyaluronan for 3 months may make your skin look shinier and feel softer, at least according to how people felt about it — but it didn’t work any better than a fake pill.
Claim Language
Language Strength
probability
Uses probability language (may, likely, can)
The claim uses 'improves' which suggests a likely or potential effect rather than a guaranteed one, and phrases like 'significant improvements observed' and 'no significant difference was found' indicate probabilistic language based on statistical outcomes rather than absolute causation.
Context Details
Domain
nutrition
Population
human
Subject
Healthy Japanese adults aged 22–59
Action
improves
Target
subjective skin luster and suppleness
Intervention Details
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.
Evidence from Studies
Supporting (0)
Contradicting (1)
Oral hyaluronan relieves wrinkles: a double-blinded, placebo-controlled study over a 12-week period
The study found that everyone’s skin got shinier and softer after 12 weeks — even people who took a sugar pill — so hyaluronan didn’t make the difference. That means the claim that hyaluronan improved skin luster and suppleness isn’t supported.