When you think of Epsom salt, you probably think of muscle-relaxing baths and migraine relief. But while you might store this cupboard essential in your bathroom, it turns out that you should buy ...

Revive the Epsom salt by spreading it on a baking tray to dry out and breaking up the clumps. If you suspect your bag of salt may need to be replaced, there are a few telltale signs to look for.