Should I press the cold foam applicator onto the wart or verruca immediately?

No. After pressing the foam applicator into the valve for 3 seconds, 20 seconds need to be waited before application on skin. This waiting period allows the gas on the foam applicator to reduce even further in temperature, resulting in the most effective therapeutic temperature for a fast and convenient removal of the wart/verruca.

Is Wartner Cryotherapy difficult to apply?

No. Wartner Cryotherapy should be applied with precision, but it’s not difficult. The information leaflet explains exactly how you should apply Wartner Cryotherapy.

Will I get a scar from using Wartner Cryotherapy?

If you follow all the directions in the instruction leaflet correctly, using Wartner Cryotherapy will not result in scarring. Skin discoloration may occasionally occur, but will disappear over time.

Is the gas mixture (DMEP) used as effective as liquid nitrogen used by the doctor?

Wartner Cryotherapy is based on the liquid nitrogen method of cryotherapy, which is used by doctors. Clinical studies have proved that Wartner Cryotherapy is as effective as liquid nitrogen.

A clinical study to compare efficacy, tolerance and safety of 2 types of cryotherapy (liquid nitrogen (LN) and dimethylether/propane (DMEP) was performed by family physicians for warts on 124 patients (174 warts). Design of the study: randomized, multi-centered, controlled clinical trial with single blind assessment. Conclusions: The results show that both cryogenic agents were >90% effective. Liquid Nitrogen has a temperature of -196ºC, whilst DMEP is -57ºC and therefore much less likely to cause deep tissue damage.


Dermatologists confirm Wartner Cryotherapy’s effectiveness: “the efficacy of Wartner Cryotherapy freezing fluid is as effective as commonly used liquid nitrogen (= doctor’s method). In case of thick callosity we remove the callosity by scraping in a gentle way and apply Wartner Cryotherapy freezing liquid effectively” Dr I H Boersma – Dermatologist – Albert Schweizer Hospital – Zwijndrecht, The Netherlands.

“The effectiveness of Wartner Cryotherapy is comparable to that of the classic technique (Liquid Nitrogen = doctor’s method) in every respect, and the freezing effect it has is similar to that obtained by Liquid Nitrogen, perhaps a little slower (20″ application instead of 3″ application), which I think is safer and less painful” Dr J M Gray – Dermatologist – Paris, France

When should Wartner Cryotherapy not be used?

Wartner Cryotherapy may not be used for:
  • removing warts on the face or the genitals;
  • skin conditions with signs of inflammation;
  • dark moles, dark-colored, hairy or otherwise unusual looking skin conditions which resemble warts;
  • warts on children under the age of four.