ghk-cu skin rejuvenation Peptide Anti-Aging Serum Cu was formulated to help provide a reduced appearance of wrinkles and fine lines GHK Copper Peptide Face Serum

Independent testing of peptides purchased from online vendors has repeatedly shown issues such as: Injecting or consuming a substance that has not been verified for human use is a serious risk

Human research dosing is typically in the range of 250500 mcg daily, administered subcutaneously or orally (noting that oral bioavailability data in humans is limited)

The honest answer is that dermal bioavailability of topically applied GHK-Cu in intact human skin has not been quantified in a published pharmacokinetic study as of this writing

The quoted material from the research has been omitted, but the sources are provided for your own review: 1