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Topical protocol guidance Apply GHK-Cu serum or cream once to twice daily, to clean dry skin For anti-aging use: apply after cleansing, before moisturizer Allow 15-20 minutes before applying other actives Best results typically emerge after consistent use over 8-12 weeks Do not combine in the same session with strong vitamin C serums, AHAs, or retinoids Post-procedure use: apply after microneedling, laser, or peel procedures as directed by the provider Injectable protocols general reference Safety profile of GHK-Cu GHK-Cu has one of the best safety profiles of any peptide studied for aesthetic and regenerative use
[5] [7] Some patients may experience increased flatulence or loose stools
Bio Rae (South Korea) Bio Rae is a Korean skincare brand that promotes DNA cell repair and deep skin hydration
The injectable GHK-Cu suggested dosage is 0.2 mL delivered subcutaneously
whereas others report outcomes as total GSH (e.g., [12, 19, 24, 26,27,28,29,30])