The World Federation One Stop Fiqh

Ruling 580

If camphor cannot be procured, or if the quantity that can be procured is sufficient only for ghusl, then camphorating is not necessary. And in the event that after ghusl an amount of camphor is left over but it is not sufficient for it to be applied to all seven parts of the body, then based on recommended precaution it must first be applied to the forehead and then to the other parts if any is left over.