A recent published randomised clinical trial has shown that Curaderm BEC5 eliminates over 80% of Actinic Keratoses with only 3 days of treatment. This study also showed that 1 tube of Curaderm BEC5 can clear over 30 Actinic Keratotic lesions. See link:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=29980