How Do Chemical Hand Warmers Work. Just open the package shake the contents periodically to accelerate the exothermic chemical reaction. Hand warmers work by converting a chemical reaction into heat.

Like most chemical reactions a mixture of products combines to create a reaction and produce heat. Depends on which kind youre thinking of. These hotties can reach up to 163 degrees Fahrenheit.
The hand warmer can be reset by boiling it in a pan of water to liquefy.
Here is some more information about hand war. What chemicals do hand warmers contain. Here is everything you need to know about the tiny hot packs. They are commonly used in outdoor activities.
