Dr. Jason Pencek on Instagram: "Melanotan 1 and Melanotan 2 are peptides that boost melanin to darken your skin without the sun. Melanotan 1 is FDA approved for rare light sensitivity conditions and gives a more gradual and even tan with fewer side effects. Melanotan 2 works faster and gives a deeper tan but often causes nausea darkened moles and a big increase in sex drive since it also affects libido and appetite. Melanotan 2 is more popular for cosmetic tanning. Both are injected under the sk