If your windshield has a small chip or starburst crack, this product is definitely worth a shot. It is critical to allow u/v rays from the sun to cure the crack. The 2 done with the tool are 80-90% filled and the 3rd was 75% repaired.

Wash the area with the alocohol swab to make sure there are no air bubbles. Rub well to seal the disk and filler and don't shortchange the times on the directions. You attach a plastic holder around the damage, fill it with resin, use an empty syringe...  Read More

This product seems like a good, preventative treatment, but it * and only makes it a lot worse. Very slight. Still, nothing. Don't waste a penny on this *.

The resin seems to have not cured right. It seeps under the adhesive but doesn't go into the crack. You can't get a seal over the repair with the tools provided.