I'm giving this product five stars, but I have to admit most of the heavy lifting on this positive review was done by Meguiar's M17 Mirror Glaze Clear Plastic Cleaner - 8 oz., which is also available on Amazon. The M17 masterfully restores dull and faded headlights, and the M10 applies afterward to protect the shine. Since I just applied the product yesterday, I cannot speak to its longevity. However, it applies and removes easily, and if I have to reapply every couple of months it will be no bother whatsoever. My headlights look fantastic! I highly recommend Meguiar's M10 and M17 products for anyone looking to rejuvenate their headlights.