Imagine just wanting to be jacked and tan and you end up like this? Melanotan II is a peptide that increases the melanin in your skin and can give men a boner that No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Love Island generation' skin cancer fear BBC News