Tanning Injections & Nasal Sprays: Everything You Should Know Skin cancer Irish Cancer Society Is this injectable tanning drug safe to use? Melanotan is trending again. As a dermatologist, I strongly need to tell you , Its an unapproved injectable peptide, and were seeing:, nausea and flushing, darkening of existing moles, That quick tan injection is NOT worth the risk., Melanotan peptide injections stimulate pigment cells, and its use has been linked to rapid changes in moles, including the potentially fatal skin