Melanotan II is a peptide hormone that acts as an analogue of alpha-melanocyte-stimulating hormone (alpha-MSH). It produces a bronzed complexion without the need for sun exposure-thereby avoiding the risks of sunburn and skin cancer-and can also enhance libido. It is particularly well-suited for use during contest preparation.
Athletes and bodybuilders use intermittent injections of peptides like Melanotan II to prolong their tan, as a tan achieved with Melanotan's assistance can last two to three times longer than a natural tan. Like other peptides, Melanotan is a fragile molecule; consequently, forms such as nasal sprays, pre-mixed solutions, pills, oral preparations, and loose powders generally fail to yield the desired research results.