how long does it take melanotan to work A peptide that makes you tan. Sounds great. What could go wrong? When it's activating your melanocytes increase pigment in your skin, may also be causing cancer— melanoma. I've had Melanotan II Before and After:

Lastly, always check for adherence to stringent manufacturing standards, with a preference for products produced in facilities following Good Manufacturing Practices (GMP), known for their commitment to quality and safety

Sci Rep (2018) 8(1):4607

The panel agreed that initial treatment should be parenteral for severe cases, while high-dose oral B12 can be considered for maintenance

Vindigni, Timothy L

We do not have human outcome data, the long-term safety of cumulative copper loading is uncharacterized, and the vials being injected are mostly research-grade products from unregulated suppliers with no sterility guarantee