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 II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider Nasal tanning sprays, or nasal tanners, are unregulated and potentially unsafe products that could be linked to skin cancer. These products can produce nasty side effects, such as nausea and vomiting, high Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and