Peptides for tanning do exist. Melanotan 1 and Melanotan 2 both work at increasing melanin in the skin. Melanotan 1 takes longer to activate. Melnotan 1 is FDA approved. Melanotan 2 does libido, Melanotan 1 (10 mg) UK SARMs Investigation of safety, tolerability, pharmacokinetics, and pharmacodynamics of single and multiple doses of a long'acti Melanotan 2 Dosage: How to Use Melanotan Peptides Safely Maintaining Tan with Melanotan 1: Dosage, Results, and Differences from Melanotan 2