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Ingredients to Avoid When Using Copper Peptides To maintain the integrity of GHK-Cu, its best to avoid layering copper peptides with: High-strength AHAs or BHAs Strong Vitamin C (ascorbic acid or ethyl ascorbic acid) Retinoids or retinol derivatives Low-pH exfoliants These ingredients can reduce peptide activity or increase irritation, especially for sensitive skin

See our copper peptides storage guide and GHK-Cu complete guide

Wound Repair Regen 17:153162 Simeon A, Wegrowski Y, Bontemps J, Maquart FX (2000) Expression of glycosaminoglycan and small proteoglycans in wounds: modulation by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu

For C34 Fab:VLP dataset, 61,787 particles were picked from 2136 movies, of which 39,766 particles generated a 4.35 refined map