Understanding MT-2 (Melanotan-2): Skin Tanning & Appetite Regulation Peptide explores one of the most researched synthetic analogs of the natural hormone α-MSH (alpha-melanocyte-stimulating hormone). This peptide has drawn scientific attention for its ability to promote melanin production, influencing pigmentation and potentially supporting skin protection against UV exposure. Beyond tanning, research also investigates MT-2’s effects on appetite regulation, energy balance, and libido modulation. By examining its mechanism of action, receptor interactions, and emerging study data, this overview sheds light on why Melanotan-2 remains a key focus in peptide research related to pigmentation biology and metabolic control.