You can always use Melanotan II instead to get a good tan while also increasing libido and sleep quality; )
Melanotan is dangerous, sadly.
Tanning causes melanocyte production in your epidermis. Melanotan causes it throughout your body in an uncontrolled manner. In a wide variety of unrelated tissues.
It can lead to uncontrolled melanocyte production that doesn't shut off - cancer. Aggressive melanomas.
It disrupts normal hormone signalling which may downstream cause a variety of deleterious health effects and disease states.
There are also crazy reports of kidney failure, which may or may not be caused by the drug.
https://pmc.ncbi.nlm.nih.gov/articles/PMC7148395/
https://pubmed.ncbi.nlm.nih.gov/23121206/
https://www.actasdermo.org/en-eruptive-dysplastic-nevi-follo...
Clinuvel Pharmaceuticals intended to offer it as a cosmetic, but abandoned this pursuit in the 2000s due to regulatory restrictions and concerns about the promotion of suntanning. Unlicensed Melanotan II is found on the internet, although health agencies advise against its use due to lack of testing and regulatory approval.