Melanotan II Nasal Spray Biaxol Supplements operates by activating receptors, which play roles in bodily processes such as skin coloration, sexual arousal and appetite control. When Melanotan II Nasal Spray Biaxol Supplements binds to these receptors, it triggers an increase in production leading to a sun tanned complexion. This peptide ability to imitate the effects of MSH allows it to regulate melanogenesis – the process for creating melanin and providing a shield against UV rays.