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Vascular dark circle improvement through skin thickening develops over 3-6 months as collagen-stimulating peptides like GHK-Cu increase dermal thickness obscuring underlying vessels
Subcutaneous injection (into fat tissue) is commonly used for amounts less than 0.5 mL
Combining AHK-Cu with GHK-Cu targets multiple copper peptide pathways simultaneously
Nevertheless, there are a few cases in which they may not be suitable for you
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