2nd time that I have used this product. always perfect. just a make a day of sun and leave the car in the sun, in fact it is the uv who do the work, or a beautician uv lamp. first a simple repair eclat become invisible in the visual field. 2nd bullet taken lightly pressed, big star and crushed glass, still visible but effectively stops spinning. not in the grave so no fields of vision. avoids having to make a claim for compensation counts as a loss.