Explanation: Neopsporin contains neomycin which has is very allergenic - meaning even if you have used it for years and not had a problem you can still become allergic to it! I see bad reactions to neopsporin all of the time! Patients often think wounds are still infected when in fact it's just a neosporin allergy. Just use Vaseline or Aquaphor! #neosporin #tiktoktaughtme #woundcare #dermhacks #denverskindoc