Before applying cryotherapy on a large area of skin it is vital to conduct a small-scale skin trial to confirm your skin tolerates extreme cold. This easy step can minimize risks like frostbite, redness, or allergic reactions.

Begin with choosing a tiny and hidden area of skin—like the back of the ear—where the skin is clean and dry. Do not test on cuts, eczema outbreaks, or open wounds.

Apply the identical cooling tool you plan to use for the full application, regardless if you’re using. Apply the cold treatment for the same duration you intend to use during the full session, usually between 10–30 seconds depending on the user manual.

Once the cold is withdrawn, inspect the tested skin for the next full day. Be alert to symptoms such as unusual flushing, inflammation, blistering, tingling that lingers, or unbearable heat sensation.

When the area heals without irritation, it is generally acceptable to continue with the full application. Should any unexpected symptoms appear, stop immediately and seek medical advice.

Obey all safety recommendations and do not exceed the advised exposure time, regardless of how well the test appears.

This precaution is especially important for people with reactive skin, diabetes, or نیتروکسی پن poor blood flow. Performing this simple check can avoid costly and painful consequences.