@matttatkins: The blue in a copper peptide serum is the GHK-Cu itself, so if yours isn't this color it's watered down. Pure copper peptides support collagen and elasticity, layer safely under or over a retinoid, and give you an immediate glow #copperpeptides #ghkcu #mensskincare #skinbarrierrepair #remedyskincare

matttatkins
matttatkins
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Tuesday 18 August 2026 21:19:22 GMT
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