The study and its comparison
Sixty Japanese adults with crow’s-feet wrinkles were randomized to placebo or one of two molecular-weight hyaluronan preparations at 120 mg daily for twelve weeks. [1]
The 300-kDa group showed a significant wrinkle difference versus placebo at eight weeks. Luster and suppleness improved from baseline in all groups, so those changes are not uniquely attributable to treatment. [1]
What the finding establishes
Wrinkle geometry is a different endpoint from collagen synthesis. The short trial does not compare injections, topical serums and oral products. Six authors disclosed Kewpie employment; full funding was not established from the record. The findings should remain attached to the tested preparations. [1]
A hypothetical distinction
Imagine a surface replica changes. It does not directly reveal how much new collagen was produced.
| Detail | Interpretation |
|---|---|
| Measured outcome | Keep the endpoint specific |
| Study preparation | Not every retail product |
| Remaining uncertainty | Not resolved by a mechanism |
Sources for this article
- Oral hyaluronan relieves wrinkles: a double-blinded, placebo-controlled study over a 12-week period.
Source consulted: 2026-09-19. This is a reference resource, not a claim that we conducted the studies or tested a product.