Melanotan (muh-LAN-oh-TAN) is a synthetic chemical that works like a hormone in your body to essentially produce melanin, or a black-brown pigment, in the skin.
According to the companies that sell the product, it allows you to tan much faster without spending hours in the sun, which can have negative effects on your skin and long-term health.
So, to summarize, this Melanotan substance is introduced into your system–through a shot or a nasal spray–and you’re promised to be a golden goddess.
When you find the sites that sell the products, the reviews range from people who rave about the tans they got in no time to those who say they got no tan at all.