Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically 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 Lets look at sunless tanning, ., Firstly theres the injections and nasal sprays which typically have an active ingredient called melanotan. This is a synthetic compound that stimulates the 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 Changes in Oral Mucosa Associated with Melanotan II Injections: A Case Report Melanotan Tanning Injections The Low Down Lynton Lasers