Pooling across the field, a 2025 meta-analysis of seven randomized controlled trials, covering 456 participants, reported a standardized mean difference of -0.72 for wrinkle reduction, though the analysis noted high heterogeneity between studies and that roughly 40% of trials had industry funding both factors that warrant caution in interpreting the pooled effect size
Look for a supplement that provides a 1000mg daily dose of reduced glutathione
The combination leverages the skin-regenerating properties of GHK and the strengthening benefits of Biotin, creating a powerful molecule for targeted skin and hair health
Aftimos PG, Barthelemy P, Rolfo CD, Hanssens V, De Jonge N, Silence K, et al
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HO-1 is renowned for its positive impacts including anti-apoptotic, antioxidant, anti-nitrosative, as well as anti-inflammatory effects against iNOS among three isoforms