Melanotan II works by mimicking a natural hormone in the body called alpha-MSH, which signals skin cells to increase melanin production—the pigment responsible for skin color.
Once Melanotan II enters the body, it binds to melanocortin receptors on skin cells. These receptors act like switches, triggering the skin to create more melanin when activated.
As melanin levels rise, the skin becomes darker, even with limited sun exposure. In addition to promoting tanning, Melanotan II may also help reduce sunburn risk and has been noted for other effects such as increased libido.


