Cryotherapy is a simple, minimally invasive medical treatment used to remove unwanted skin lesions by freezing them with extreme cold, typically using liquid nitrogen. It is commonly performed in a GP or dermatology clinic and does not require surgery, cuts, or stitches.

This treatment is effective for a variety of skin conditions, including warts, skin tags, actinic keratoses (precancerous spots), and some benign lesions. In certain cases, it may also be used for small, superficial skin cancers.

During the procedure, liquid nitrogen (at approximately –196°C) is applied directly to the affected area using a spray or cotton applicator. The intense cold destroys the abnormal cells, which are then naturally shed and replaced by healthy skin over time. The process usually takes only a few minutes. Patients may experience a brief stinging or burning sensation during application.