Really dangerous' tanning products containing melanotan 2 on the rise warns dermatologist Express.co.uk Melanotan II A Sun Kissed Look, and a Confident You. Melanotan II: Tanning, Sexual Health Benefits, & Safety Concerns 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 II A Sun Kissed Look, and a Confident You.