Nasal tanning sprays linked to skin cancer, trading standards officers warn Consumer affairs The Guardian Melanotan II Safety: Tanning Injection LIVV Natural Melanotan II Safety: Tanning Injection LIVV Natural 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 Man warns against 'dangerous' tanning injections after turning so dark he 'looked like Madge from Benidorm' and now has the freckled skin of a 60 year old