Demagnitizing/de static electricity headlights

So today I was removing the foglight cover in my jdm one peice headlights. I had to drill the plastic where the screws were to get it out. After drilling it there is a fine dust inside the headlight. It has major static electricity inside now and the dust is sticking to the plastic. How can I demagnatize the headlight? I tried vacuuming it out. I don’t want to put water in it because I don’t want water spots. Any ideas?