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 Risks of Melanotan: TGA to issue fresh warning against 'Barbie drug' The Australian Don't risk using tanning products containing melanotan Therapeutic Goods Administration (TGA) Melanotan II A Sun Kissed Look, and a Confident You.