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Biogenix Peptides offers high-quality GHK-Cu for research purposes, ensuring purity and reliability for scientific investigations
Topical vs Injectable Tolerability Topical GHK-Cu appears better tolerated than injectable forms, with topical side effects typically limited to mild redness, itching, or irritation at application site and rare copper uglies phenomenon (anecdotal accelerated skin aging appearance due to potential MMP upregulation, not well-studied)
This is a bit of an oversimplification, but for a good visual, I often point this out to my patients
The Journal of Clinical Endocrinology and Metabolism, 59 (1), 127-132
However, these genetic associations are inconsistent as studies typically have quality-control issues (78)
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