1. Avoid direct contact: Ice packs should not come into direct contact with the skin, as this may cause frostbite.
2. Control the temperature: Pay attention to the temperature when using ice packs to avoid excessive cooling.
3. Avoid use on wounds: Do not use on open wounds or broken skin to avoid infection or worsening of the injury.
4. Use with caution in certain groups: People with restricted blood circulation, sensory impairment, or skin lesions should use ice packs with extra caution and preferably under the guidance of a doctor.
5. Discontinue use immediately if discomfort occurs: If redness, swelling, numbness, or other discomfort occurs after using an ice pack, discontinue use immediately and consult a doctor.