Buy 99%+ Purity Skin Tanning Peptides Melanotan I (MT-1) 10mg Powder Online   What is Melanotan-1? Melanotan-1 is a synthetic peptide variant of a peptide hormone, called alpha-Melanocyte stimulating hormone or MSH that is naturally produced in the body and is responsible for stimulating melanogenesis, a peptide process for pigmentation of the skin. Alpha-MSH activates certain melanocortin receptors in the …