how often to take ghk cu Inject GHK-Cu GHK-Cu Peptide: Skin, Hair &
Description
Methanol (400 L) was then added to stop the reaction

Although early research is encouraging, clinical evidence in humans remains limited and further studies are needed
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2006 PMID 16609979)

That said, it can take anywhere from 3-6 months before you begin to notice the full benefits of your treatment