Lifehacker: MacGyver Tip: Dishwashing liquid ice pack
My wife pulled her sciatic nerve last week. An ice pack was recommended but one of our friends gave us a great tip.
Instead of an ice pack, partially fill a strong zip lock back with Dawn dishwashing detergent and freeze it. (I don¹t know if other brands would work just as well.)
Just to be safe, we double-bagged it!
The detergent stays cold much longer and it can be re-frozen over and over. It also molds to your back better than ice.
