Melanotan II (MT-2) is a synthetic, cyclic heptapeptide analog of the naturally occurring $\alpha$-melanocyte-stimulating hormone ($\alpha$-MSH). It is designed to non-selectively stimulate melanocortin receptors throughout the body, triggering skin pigmentation (melanogenesis) and influencing central nervous system pathways.
Originally developed at the University of Arizona as a sunless tanning agent and skin cancer prophylactic, Melanotan II stimulates the production of melanin without requiring excessive ultraviolet (UV) radiation exposure. Additionally, MT-2 crosses the blood-brain barrier to interact with central melanocortin receptors, influencing libido, appetite, and systemic arousal. The 10mg vial is a high-capacity freeze-dried formulation standard for research protocols.
Key Benefits & Applications
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Stimulation of Melanogenesis: Promotes the production and secretion of melanin (the pigment responsible for skin color) by activating epidermal melanocytes.
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Sun Protection & Reduced UV Damage: Provides skin darkening with minimal UV exposure, lowering the risk of sunburn and radiation-induced DNA damage.
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Pro-Erectile & Libido Enhancement: Binds to central MC3R and MC4R receptors in the brain, significantly heightening sexual libido and inducing spontaneous penile erections.
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Mild Appetite Suppression: Interaction with hypothalamic MC4R pathways helps curb hunger and support caloric reduction.
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Extended Photoprotection: The resulting pigmentation lasts for weeks to months after the initial loading protocol is complete.






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