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 Illegal tanning nasal spray not a 'harmless alternative' to sunbaking, says TGA ABC News Maintaining Tan with Melanotan 1: Dosage, Results, and Differences from Melanotan 2 Who's tan is reay for summer. This peptide can help.