what is the average dose of ghk cu GHK-Cu Dosage and Protocol: A Medical Provider's Guide to 30-Day Cycle GHK-CU Peptide Injection Dosage: Complete
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Nestor, M

Annu Res Rev Biol 2017;11:1-8 10.9734/ARRB/2016/31711 [DOI] [Google Scholar] 62

How Can Vitamin B12 Affect the Skin
It is studied for its ability to support collagen and glycosaminoglycan synthesis, attract immune cells to sites of repair, and exhibit antioxidant properties
If you take metformin or acid-reducing medications long-term, these can lower B12 a good reason to supplement, but discuss monitoring with your practitioner

Both peptides are appropriate for adults experiencing age-related skin changes, but your primary concern can guide which formulation to emphasize in your protocol
