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 Tan Boosting Duo Sun Tanning Lotion + Spray Tan Accelerating Trio Peptide Sun Tanning Lotion No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky