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Capsule Dosing Schedule Cycle length: 8 weeks on, 4 weeks off is a common research-protocol pattern for ERR agonist studies

GHK-Cu is a naturally occurring copper peptide famous in skin and repair research for stimulating collagen, firming and renewing skin, and supporting wound healing

Use Retin-A at night and copper peptides in the morning Or alternate nights for sensitive skin If using together, apply Retin-A first, wait 2030 minutes, then apply your peptide serum Always use SPF daily This balanced approach prevents irritation and enhances long-term skin renewal

Factors Affecting Individual GHK-Cu Before and After Results Two people running the exact same protocol can get different outcomes