Taking a specific hyaluronic acid pill every day for a month can make your skin more hydrated, smoother, and tighter if you're an adult woman showing early signs of aging.
Claim Language
Language Strength
definitive
Uses definitive language (causes, prevents, cures)
The claim uses definitive verbs such as 'increases', 'reduces', and 'improves', which directly assert cause-and-effect outcomes without qualifiers like 'may' or 'likely'. These verbs imply certainty in the effect of the supplement on the measured skin parameters.
Context Details
Domain
nutrition
Population
human
Subject
adult females with mild-to-moderate skin aging signs
Action
increases, reduces, improves
Target
skin hydration, wrinkle depth, wrinkle volume, skin elasticity and firmness
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 (1)
Oral intake of a new full-spectrum hyaluronan improves skin profilometry and ageing: a randomized, double-blind, placebo-controlled clinical trial
This study gave 200 mg of a special hyaluronic acid supplement daily to women with aging skin for 28 days, and their skin got noticeably more hydrated, smoother, and firmer — exactly as the claim says.