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Pyo et al., 2007) In one clinical study, topical application of GHK-Cu was associated with a ~27% increase in hair density and up to 70% reduction in shedding within three months (Pickart & Margolina, 2018)

90% efficacy with 1,000 mcg oral daily

Mechanistic synergy does not guarantee safety synergy

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Finally, although this study focused on a single induction protocol, variations in differentiation methods across research groups may affect maturation timelines, limiting the direct applicability of findings to alternate protocols