Melanotan is not a tan. It's an unregulated peptide with real risk. As a dermatologist, here's the reality: It has been linked to new and changing moles including cases of Melanotan 1 vs. 2: My Summer Journey & Real Results Natural Kaos Melanotan 2 doesn't just stimulate melanin in your skin, but your hair follicles aswell .. my beard is about 80% darker today, than a month before I started taking melanotan. Guys with Natural red hair color is primarily caused by variants in the MC1R (melanocortin 1 receptor) gene, which regulates melanin production in the body. These variants favor the production of reddish yellow pheomelanin over Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically