A Randomized, Double-Blind, Placebo-Controlled, Split-Face Study of the Efficacy of Topical Epidermal Growth Factor for the Treatment of Melasma.
randomized, double-blind, split-face
EVIDENCE COMPARISON
SupportiveEarly or indirect evidence suggests hyaluronic acid matrix reduces pigmentation 3.73 times more effectively than epidermal growth factor for skin tone improvement, based on indirect comparison.
Effect ratio
Favored
Studies
Comparison
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.
Tone
Kept public as exploratory because it indirect comparison; mixed endpoint quality.
Some study-specific context may affect how broadly this comparison generalizes.