Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Melanotan peptide might seem like the cool thing to doit makes you look tan., But these unregulated injections come with real risks., They can cause unpredictable skin changes, including darkening of Melanotan II A Sun Kissed Look, and a Confident You. Full article: Melanotan II injection resulting in systemic toxicity and rhabdomyolysis Illegal tanning nasal spray not a 'harmless alternative' to sunbaking, says TGA ABC News How Melanotan Peptides Work to Enhance Skin Tone and Promote Tanning Age Well ATL