… a New Hyaluronic Acid Matrix Ingredient Improves Skin Brightness, Hydration, Smoothness, and Roughness: Results from a Randomized, Double-Blinded, Placebo …
randomized, double-blind
EVIDENCE COMPARISON
DirectionalEarly or indirect evidence suggests melatonin may provide 10% better skin texture smoothness than hyaluronic acid matrix, based on indirect comparison.
Effect ratio
Favored
Studies
Comparison
Limits: Indirect comparison · Includes estimated measurement · Early-stage evidence tier
This is an indirect comparison — the two ingredients were not tested head-to-head in the same trial. The ratio is derived from separate studies against a common comparator.
Kept public as exploratory because it indirect comparison; includes estimated measurement; early-stage evidence tier.
Some study-specific context may affect how broadly this comparison generalizes.