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five studies in the medial frontal cortex
Vitamin C aids in collagen formation and provides antioxidant support
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( Wiley Online Library ) Where the evidence is still a bit thin Topical anti-wrinkle outcomes: a 2025 review on topical GHK as an anti-wrinkle peptide points out practical limitations (like stability and penetration) and highlights that clinical studies are surprisingly limited compared to how widely its promoted
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