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Evens out skin tone for a naturally flawless look
Its short sequence Gly-His-Lys binds Cu2+ ions with exceptional affinity through the histidine imidazole ring and the terminal amine, forming the characteristic blue complex
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Last Updated: March 31, 2026 | Reading Time: Approximately 10 minutes | Author: Palmetto Peptides Research Team Quick Answer GHK-Cu is more stable than many research peptides when stored correctly, but its copper-binding chemistry introduces degradation considerations that do not apply to unbound peptides
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