Freezing treatment Freezing warts is a popular treatment. Many GPs and practice nurses are skilled at this. Liquid nitrogen is commonly used. The nitrogen is sprayed on or applied to the wart. Liquid nitrogen is very cold and the freezing and thawing destroys the wart tissue. There is also an option to buy a very cold spray (dimethyl-ether/propane spray) from pharmacies. You can apply this yourself (but you should not treat warts on your face with this).
To clear the wart fully it can need up to four treatment sessions. Each treatment session is a couple of weeks or so apart. The chance of clearing a wart with freezing treatment is about the same as acid treatment. However, it tends to be quicker.
Freezing treatment can be painful. Sometimes a small blister develops for a day or so on the nearby skin after treatment. Also, there is a slight risk of scarring the nearby skin or nail, or damaging underlying tissues such as tendons or nerves. It is not suitable for younger children or for people with poor circulation
Check with your GP but I think its available at pharmacists now.....