It involves the usage of freezing temperature to annihilate the diseased tissues. It is also referred to as cryoablation, cryosurgery or targeted cryoablation therapy. It is minimally invasive tissue that is capable of eliminating unwanted growing cells. This technique comprises application of liquid nitrogen gas on the diseased cells, which is present outside the body. Cryotherapy requires a cryo-gun through which the liquid nitrogen gas is delivered in targeted manner destroying the the diseased tissue. Cryotherapy benefits certain conditions such as warts, freckles and precancerous skin moles.