Warning issued over increased use of 'Barbie drug' My video about the dangers of tanning nasal sprays and sunbeds went viral on TikTok and the reaction it received is terrifying Dr Sophie Shotter 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 Think twice before injecting peptides bought online: unauthorized products can seriously harm you Canada.ca