Insights into Tanning Biology and Tanning Products JCAD The Journal of Clinical and Aesthetic Dermatology There are two peptides people talk about for tanning: Melanotan 1 and Melanotan 2. Melanotan 1 works slower and mainly targets the skin, leading to a more gradual and even increase in 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 as injectable Can You Take Too Much Melanotan? A Z Guide