Makes Ironing easier.  Removes dirty stains from the plate.  Non toxic and non corrosive.
To use:
Set iron at 60 degrees C
Place iron in upright position on a cloth and run the stick over the plate leaving a thin layer of product.
Rub with a rough cloth to remove all traces of dirt.
With a steam iron after cleaning, it is advisable to increase the tempoerature to cotton to free the holes with a few blasts of steam