Lifespan of a Nanoskin Fine Speedy Prep

[Desertnate]

How long do the Nanoskin Speedy Prep pads last?

I have the fine grade pad, and even though it still seems to be working fine, I noticed the rubbing surface is starting to show signs of wear. How do you know when the pad is done and needs to be replaced?

[Evan.J]

You can get about 40 cars. If you are seeing a decrease in performance then it will be time for a replacement

[7.3powerstroke]

How do know it is shot? Check after it to make sure the contamination is gone?