IMB issues warning over tanning injections at salons or bought on internet The Irish Times You Should Avoid Using Nasal Tanning Sprays 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 Cancer Association of South Africa (CANSA) Fact Sheet and Position Statement on Sunless Tanning