Tanning from the inside out = Highly Dangerous and Illegal! Many products advertised on social media platforms promising a tan from the inside out or a tan without sun such Think twice before injecting peptides bought online: unauthorized products can seriously harm you Canada.ca Melanotan II: Tanning, Sexual Health Benefits, & Safety Concerns 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 Love Island generation' skin cancer fear