Citrus Extra Strength Callus Remover Directions : After soaking feet , spread generous amount over callus. Leave on for 3-5 minutes ONLY. Wipe away excess with a file , paper towel , or pumice stone . Wear gloves .Warning : May cause burning.  Keep out of reach from children. Keep away from cuts on skin. Wear gloves. Contact with eyes , flush with warm water for 20 minutes.  Wash off immediately after every use. For external use only. For professional licensed nail technicians use only.