Bulbs over 55 watts without UV coatings will cause deterioration of the plastic from the inside. Bad.
If it is on the outside, there is a harder UV resistant layer that has to come off or it will look mottled.
I ground the bothersome little plastic protrusions off the outside so I could use a buffer without ripping the pad.
Once the protective coating is gone, you will have to re-do them periodically.
