Find 2% Lodocaine injetion vial. It is not expensive and not hard to find.
Add a few drops to the shot and pain would be gone literally in a few seconds.
Pain may come back next day, but would be much milder. The worse would already be over. THERE IS NO BETTER METHOD.
Surgical method: Take a drop of 2% lidocaine in insuline syringe, and just inject a drop in superficial skin (trying to make a blister or blob, but not amust). As long as it is superficial enough, you can stab a 14 g needle (just joking) and you wont feel a thing. Add a few drops of 2% lidocaine to the injection itself, and you would cruize through.
There is no better method. All the rest is kidd stuff and also more likely to cause infection.
Anyone who disagrees with it doesn't know what he is talking about!!!!!!!!!!!!!!