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 II (MT II) Peptide Therapy Beverly Hills October 2017 VOL. 14, ED 3. by PeningtonInstitute Issuu