There are three methods that can be used in cauterization:
- Cauterization by heat
- Cauterization by cold
- Cauterization with chemical agents
The following text provides information on how these methods are used to remove warts.
Electrocautery uses electrically generated heat to cut or destroy tissue.
A so-called electrocautery is used for this purpose. This is a small branding iron with a fine wire loop. This loop is heated to a high temperature. The surgeon uses the electrocautery to treat the tissue to be cut or removed.
The heat scorches any injured blood vessels. This largely prevents bleeding.
Cauterization by heat can be used to remove warts . However, this method is less promising than cauterization with cold.
Electrocoagulation also uses electrically generated heat to remove warts, for example. There is no hot snare with which the surgeon cuts. Instead, electricity is conducted into the body via an electrode, which generates intense heat at specific points. In this way, tissue can be cauterized.
Cauterization by cold is also known as cryosurgery. With this method, tissue is surgically removed by exposing it to extreme cold. The tissue is literally frozen: Ice crystals form in the tissue cells, destroying them. These dead cells can be easily removed.
As a rule, liquid nitrogen is used in cold cauterization to reach temperatures of up to -196 °C. This process is used primarily in dermatology.
This procedure is mainly used in dermatology to remove warts, for example. The dead wart falls off on its own after a while.
Cold cauterization can also be used for self-treatment of warts. Cold sprays are available over the counter in pharmacies and health food stores. In stubborn or unclear cases, the doctor uses a cold probe. This allows the cold to be applied more precisely.
Cold cauterization is very popular for wart removal. It shows quick results and the affected areas of skin heal quickly.

Stalk warts after cold cauterization. They will soon fall off on their own © hkama | AdobeStock
A blister may form after the treatment. You must not pierce or remove this, as otherwise a new infection with bacteria may occur. Cover the blister with a blister plaster. Such plasters are available from chemists, health food stores and pharmacies. It is also helpful to apply so-called blister ointments, which are also available in stores.
Cold cauterization is very promising for individual warts. The treatment is less successful for wart beds.
Tissue can also be destroyed chemically. Lactic acid or salicylic acid are used for this purpose. This is referred to as cauterization with chemical agents. These over-the-counter agents are very popular for wart removal and have been proven to be successful.
The user applies the active ingredient directly to the surface of the wart using a small brush. The treated skin layer then dies off and can be removed. The application is repeated until the wart is completely removed. Three to four applications per day are recommended.
The treatment can last from a few days to two weeks. If the virus causing the wart is not destroyed during treatment, the wart will most likely form again.
The acid it contains also attacks healthy areas of skin. You should therefore protect the surrounding skin well. You can treat the area around the wart with an oil cream, for example. This will prevent the wart remedy from reaching the healthy skin.
Citric acid is also suitable as a natural remedy to combat warts. Citric acid is also corrosive. The same precautions apply here as with products containing lactic or salicylic acid: protect healthy skin!
When is chemical cauterization not suitable?
You should completely refrain from treating warts with chemical agents if the wart is in the area of
- the eyes,
- the mouth, nose or
- in the genital area
area. Serious damage can occur here!
Children should also not be treated with chemical wart killers. Children's skin is very sensitive and therefore easily damaged. In addition, children experience the pain of cauterization with salicylic acid as very severe.
Conclusion on chemical cauterization
Although cauterizing warts with acid is effective, it takes longer. Great care must be taken during application so as not to damage the surrounding skin areas.
You should not use such products in sensitive areas or on children.
If you have any doubts as to whether chemical products are suitable for you, consult your doctor. You should also see a doctor if chemical cauterization is not successful after several weeks.

You can perform chemical cauterization yourself at home © © RFBSIP | AdobeStock
Pay attention to cleanliness and hygiene after a wart cauterization.
Various ointments, which are available in pharmacies, help to renew damaged areas of skin. The active ingredient dexpanthenol has a good healing effect. It stimulates the formation of new skin when it is applied to the skin area of the detached wart. However, do not apply the ointment until the wart in question has fallen off through cauterization.
Strengthening the immune system is also important. A healthy, strong immune system protects against new wart infestations and helps with the healing process.
All of the cauterization methods mentioned here are suitable for removing warts. However, as some of the remedies are very dangerous, you should follow the package leaflet carefully. If in doubt, ask your doctor or pharmacist. A dermatologist can reliably remove many types of warts using cryotherapy.
When treating warts, the virus causing the wart must also be destroyed. Otherwise the wart will always form again. Anintact immune system is very important for this. Make sure you eat a healthy, varied diet and get enough exercise.