Liquid nitrogen (−196°C) can cause severe cold burns (cryogenic burns) similar to frostbite. Immediate and correct action is essential to minimize injury.

1. Move Away from the Source
Quickly step away from the liquid nitrogen spill to avoid further exposure. Ensure you are in a safe, well-ventilated area.

2. Remove Contaminated Clothing
If liquid nitrogen has soaked into clothing, remove it immediately. Fabric can trap the liquid against the skin, prolonging exposure and worsening injury. Do this carefully to avoid tearing skin if it has adhered.

3. Warm the Affected Area Gradually
Do not rub the skin. Instead, gently warm the affected area using lukewarm water (around 37–40°C / 98–104°F). This helps restore normal temperature safely. Avoid hot water, direct heat, or open flames, as these can cause further tissue damage.

4. Do Not Apply Dry Heat or Ice
Applying heaters, hair dryers, or ice can worsen the injury. Controlled, gradual warming is the safest approach.

5. Protect the Skin
After warming, loosely cover the area with a clean, dry, sterile dressing. Avoid tight bandaging.

6. Seek Medical Attention
Even if the injury appears mild, it is important to seek professional evaluation—especially if there is blistering, numbness, discoloration (white, gray, or blue skin), or pain. Severe exposure can damage deeper tissues without immediate obvious symptoms.

7. Watch for Secondary Risks
In confined spaces, evaporating nitrogen can displace oxygen and lead to oxygen deficiency. If symptoms like dizziness, headache, or difficulty breathing occur, move to fresh air immediately and seek help.

Prevention Tips
Always wear proper protective equipment when handling liquid nitrogen, including cryogenic gloves, face shields, and protective clothing, and handle containers carefully to avoid splashing.

Accidents can happen—but the right response can significantly reduce injury and ensure safety.