Fluorouracil
"This is the best!!   I've been using it for 4 years and it is absolutely the best solution for AK's.  I am 60 years old, fair skin, been outside for years and developed way too many AK's, not to mention basal and squamous problems too.   For years, the dermatologist only used spot nitrogen and prescribed caramac.     I can only assume she didn't prescribe efudex because she needed the steady income stream from me and my insurance.     By chance I was having a physical from my family doctor.   He asked me when I was going to address my AK;s on forehead.   I told him I did, and he told me he could write me a prescription for medicine that solves it, efudex.  He did and I amazed at the ending results.  Yes, the efudex was painful, looked bad when it was working but results speak for them self"