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Look for HPLC purity above 98%, confirmed peptide molecular weight by mass spectrometry (intact GHK-Cu complex is approximately 340 Da), copper content by ICP-MS, and absence of residual solvents

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Aiva Cosmetics Skin Harmony Serum 63% match with the ingredients and function of Sumanurica GHK-CU Repairing Serum Dupe Explained These products are both serums that contain ectoin and peptides

Golshayan AR, Antonarakis ES

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For areas with weaker blood flow, such as the frontal hairline and vertex, this improved environment helps prevent follicular degradation caused by poor nutrient supply