Insights into Tanning Biology and Tanning Products JCAD The Journal of Clinical and Aesthetic Dermatology Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun Why is Melanotan II one of the more debated compounds on this list?, Melanotan II is a synthetic compound that affects melanocortin receptors and has been discussed for its effects on skin You Should Avoid Using Nasal Tanning Sprays The Melanocortin System: A Promising Target for the Development of New Antidepressant Drugs 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