Mr. Pumice Fungus Treatment 0.5fl ozMr. Pumice Fungus Treatment is a strong and effective topical treatment that contains FDA approved Undecylenic Acid. This liquid can be used safely 2-3 times per day to treat nail fungus on both natural and artificial nails.Safe & fastAntibacterial & antiviral propertiesEasy to dispense liquidContains no ThymolWorks over nail lacquer & artificial nailsCan be used 2-3 times daily