The Lavatherm packs contain sodium acetate (a liquid salt), which is absolutely non-toxic and biodegradable. The packs are reusable for many years and are therefore a non polluting alternative to disposable packs and adhesives.
How to use Lavatherm:
1. The packs contains a coloured, small activator stick, approximately the size of a match. Take this stick in both hands and bend it gently up and down for 2 - 3 times, it cannot break while this is done.
2. Instantly white salt crystals will build in the pack and it will heat up to a temperature of approx. 54