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 injections are sold illegally and possibly unsafe Cancer Research UK Cancer News No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Melanotan II: Tanning injections, nasal sprays harmful to health Tanning injections: 'The side effects could be extremely serious' ITV News Wales