Melanotan I

Melanotan I, also known as afamelanotide, is a synthetic analog of alpha-melanocyte-stimulating hormone (α-MSH). It is engineered to be more stable than the native hormone while retaining affinity for melanocortin receptors.

It is a linear peptide and a common reference compound in pigment-biology and melanocortin-receptor research.

It is popularly associated in tanning and biohacking communities with stimulating skin pigmentation and is anecdotally discussed for photoprotection interest.

Melanotan-1 (afamelanotide) is a synthetic analog of alpha-MSH that the tanning community reputedly favors for its purported ability to increase melanin production and deepen skin pigmentation, a common keyword in sunless-tanning and skin-darkening discussions.

Researchers are investigating melanocortin pathway activation for its role in eumelanin synthesis and potential photoprotection, mechanisms enthusiasts popularly link to a darker tan and reduced sun sensitivity.

Discussion here stays focused on pigmentation and tanning research interest; these remain areas of active or preclinical investigation and community interest, not outcomes established in humans.

Research has examined Melanotan I as an agonist at the melanocortin-1 receptor (MC1R) and its role in melanogenesis, the process by which melanocytes produce the pigment melanin, in cell and animal models.

Studies measure receptor binding and pigment-related markers in the laboratory. These are laboratory observations, not human outcomes.

Melanotan I ships lyophilized and is stored at -20°C, sealed and protected from light. It is a relatively hydrophobic peptide, so although bacteriostatic or sterile water is standard, slightly acidic (dilute acetic acid) water is sometimes used in research handling to improve solubility. Copper is not involved and no blue tint is expected.

After reconstitution it is kept at 4°C for short-term use or aliquoted at -80°C to limit freeze-thaw cycles. Each lot is supplied with an HPLC certificate of analysis.