MT-2 was initially created as a potential preventive treatment for different types of skin cancer. It was believed that artificially enhancing the body's tanning process in individuals who are at a higher risk for skin cancer due to sun exposure could reduce the likelihood of these people developing the illness later in life.
In addition to allowing a tan without extensive sun exposure, as well as potentially enhancing sexual performance and/or desire, Melanotan II may also aid in reducing appetite by affecting an appetite-suppressing receptor in the brain. While this effect is not dramatic, many users find it noticeable and beneficial. The duration of the tanning effect after stopping the drug will depend on various factors. Most users, however, will observe that the tan acquired from the drug fades and becomes less noticeable within four to eight weeks after they stop using it.
For the majority of people, during the initial loading phase with the hormone, a dose of about 0.015 to 0.02 milligrams per kilogram of body weight per injection should be adequate. These injections may be administered anywhere from twice a day to as infrequently as every other day or longer. During the maintenance phase, many individuals discover that a dose of roughly 0.01 milligrams per kilogram of body weight given every few days is sufficient to sustain the effects of the hormone.