Minz - It's called Sting-Kill. You can get it in packet form where you tear it open and there is a little anesthetic towel in it, just put it onto the sting area, kills the pain quickly. And, you can get the small plastic tubes that have cotton on the end, you just squeeze/break the tube with your fingers and the cotton on the end fills up with anesthetic, then wipe it on the sting area. Both application work great. Hubby works for the forest service in the summer and keeps them in his lunch box (which is with him all the time) for stings for himself or campers and hikers that have gotten nasty insect bites.
You can get them in any store that has a pharmacy.