[KristerK]

Washing the stock protector off in warm water with some mild dish soap is a good way to go. I just did this today.

Remove the protector from your phone, and get some soap on your thumb and forefinger. Then run some warm water on both sides of the protector, and rub the plastic gently between your two soapy fingers. Then rinse it off and pat the outside-facing side (feels less grippy) dry with either a microfiber towel or a paper towel. You can do the same for the grippy side, or just let it air-dry. Then re-apply.