Hold the foam applicator on the blue section between the thumb and index finger and squeeze until a small opening appears.

Slide the opening of the foam applicator over the stick of the plastic key until the stick is no longer visible. You will find the plastic key in the bag containing the foam applicators.

Holding the can at the bottom, press down firmly for 3 seconds. You will hear a hissing sound while pressing.

Remove the plastic key with the foam applicator from the valve. The foam applicator is saturated with cold liquid and condensation will form. This condensation is harmless.

Place the aerosol spray can on a table or other sturdy surface. CAUTION! Do not hold the spray can near your face, over parts of your body or clothing!

Leave the foam applicator on the plastic key and then firmly push the foam applicator on the wart or verruca that is to be frozen. The foam applicator should be applied to the area for a maximum of 20 seconds. See below for detailed instructions - treatment with Wartner® differs depending on the type of wart or verruca. A slight aching, stinging sensation will occur as a result of freezing. Discard the foam applicator after single use.