Many fruits and vegetables purchased at grocery stores and farm stands are waxed to prevent mold and bruises when they are in transit. Many fruits and vegetables produce a natural wax to help them retain moisture. This is washed off when the produce is cleaned, so it is then replaced by the farmers. Waxing also improves the appearance of the produce, which the growers hope leads to more sales. The waxes aren't harmful if eaten, but they can be removed prior to using the produce if you prefer.
Remove any stickers or labels from the produce then inspect for signs of wax. Waxed items are usually shiny and sometimes may have a slight white residue on them.
Wash the vegetable under cool running water. Scrub gently with a vegetable brush to remove any dirt and as much of the wax as you can.
Pat the vegetable or fruit dry. If it is still shiny and appears waxed, spray it with a purchased produce wash following the application instructions.
Scrub a second time with the vegetable brush. Peel off any sections that still have visible wax if removal did not work.