Liquid nitrogen freezing is a more commonly used physical therapy in dermatology, mainly for treating skin conditions like common warts, flat warts, seborrheic keratosis, infectious molluscum contagiosum, and rashes. The treatment is done by dipping a cotton swab in liquid nitrogen and touching the lesions, usually with 2-3 seconds of pressure, which causes rapid hypothermic necrosis of the local tissues, thus treating the skin disease. Depending on the size of the lesions, treatment of common warts usually requires one or more sessions, with an interval of about ten days or so. For the treatment of infectious molluscum contagiosum, liquid nitrogen contact with the wart and then using tweezers to break the wart and apply iodophor externally can improve the cure rate of infectious molluscum contagiosum. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things.