That quick tan injection is NOT worth the risk., Melanotan peptide injections stimulate pigment cells, and its use has been linked to rapid changes in moles, including the potentially fatal skin Why I Refuse to Use Salmon Sperm & Melanotan II in My Practice Melanotan II (Tan Jabs): Why They're Not Worth The Risk Tanning peptides like melanotan are trending online, but theyre not approved, not regulated, and illegal to advertise in Australia. When products havent been properly tested, theres no way to know