Comparing Melanotan 1 and Melanotan 2 Peptides Core Peptides Melanotan 2: Day 6 , Another one hour in what minimal sun we had today. , No tanning beds, just sun. , Moved down to 50mcg before sun exposure, No more side effects :) , Before & before , Well see MELANOTAN 1 Crescent Chems Research There are two peptides people talk about for tanning: Melanotan 1 and Melanotan 2. Melanotan 1 works slower and mainly targets the skin, leading to a more gradual and even increase in pigment with Melanotan 1 vs. 2: My Summer Journey & Real Results Natural Kaos Melanotan What It Is and Its Relation to Skin Cancer