Melanotan II: Tanning injections, nasal sprays harmful to health Avoid nasal tanning sprays or nasal tanners entirely. These products promise an all over tan without sun exposure but they are unregulated, can be unsafe, and contain potentially risky substances like Melanotan 2. Imagine just wanting to be jacked and tan and you end up like this? Melanotan II is a peptide that increases the melanin in your skin and can give men a boner that Melanotan Tanning Injections The Low Down Lynton Lasers The Tanning Drug What Patients Should Know