MT-1 (Melanotan I) vs MT-2 (Melanotan II)
MT-1 vs MT-2 for tanning: side effect profile, libido effects, FDA status, and which is gentler.
MT-1 mimics a hormone your body uses to make pigment in your skin. With sun or tanning-bed exposure, it gives you a darker tan from much less UV time. Cleaner side-effect profile than the more popular MT-2.
MT-2 is the more potent (and rougher) sibling of MT-1. Stronger pigmentation but harder side-effect profile, including unwanted libido effects. Most people who tried MT-2 first migrate to MT-1 for cleaner results.
Which one should you pick?
Pick MT-1 (Melanotan I) if light-skinned users wanting baseline tan with less uv time or people who tried mt-2 and didn't tolerate the libido / nausea hit.
Pick MT-2 (Melanotan II) if users wanting deeper pigmentation than mt-1 delivers or people who specifically want the libido side effect.