Melanotan I (MT1)

Melanotan I (MT1)

Melanotan I works by copying a natural hormone in the body called alpha-MSH. This hormone tells skin cells to make more melanin, which is the pigment that gives skin its color.

When Melanotan I is in the body, it attaches to special receptors on skin cells. These receptors act like light switches—once Melanotan I connects, they turn on the signal to produce more melanin.

As melanin levels go up, the skin starts to get darker, even without much sun exposure. This is how Melanotan I can help the body tan or protect the skin from sun damage.

Melanotan (MT) and Melanotan II (MT-II) are both analogs of the alpha-melanocyte stimulating hormone (α-MSH) which is produced within the pituitary gland. Along with other melanocortins, they are responsible for various internal human functions including skin and hair pigmentation, appetite, libido and physical sexual arousal. Whilst these effects have been observed in both sexes, it is worth noting that increases in libido and sexual function are exclusive to MT-II.

Prompted by ultraviolet (UV) exposure, α-MSH release consequently stimulates production of melanin from the melanocytes within the skin. Melanin, as I’m sure you are aware, is a brown pigment and responsible for the tanning of the skin. Simply put, more α-MSH means more melanin, resulting in greater skin pigmentation.