Screen before. Notice all the bubbles.

Take your case apart.

Take your cloth (I decided to just use a napkin, but a cleaning cloth works best) and clean your screen.

Do the same to the screen on the Otterbox.

Take your brush and a little bit of face powder or baby powder, either works fine.

Apply a thin layer to your iPhone screen.

And the inside screen of your Otterbox.

Put your case back together, and notice no more bubbles!