Localized cryotherapy is considered safe when performed by a qualified medical professional. Potential side effects, usually minor and temporary, include redness, swelling, or blistering. Many people feel the benefits of removing precancerous growths or lesions outweigh the potential risks of medical cryotherapy procedures.
Advocates claim that whole-body cryotherapy (WBC), is generally safe for most healthy adults, provided it's administered properly in a controlled setting by qualified staff. However, the American Academy of Dermatology Association (AAD) cautions against this type of cryotherapy due to the limited scientific research and the serious potential health risks, which include frostbite, burns, and eye injuries.