The Rain-X 600001 Windshield Repair Kit is pretty good for tackling minor chips and cracks on your windshield.
It's really more about preventing further damage for certain types of breaks. Based on what the manufacturer says, it's best used for round chips up to one inch across and straight cracks up to 12 inches long. Just make sure the damage is only on the outer layer of the glass, or it won't work as well.
The kit uses a special resin to fill in the damaged spots and reinforce the glass a bit. The process is simple enough: you clean the area, apply the resin, cover it with this curing strip, and let it set in direct sunlight. According to our research, sticking to the instructions is key. Apparently, some folks rush the resin application and end up with air bubbles, so watch out for that.
From what we've gathered, most people think the Rain-X kit makes minor chips look better and keeps most cracks from spreading. Some mentioned their windshield looked noticeably better after using it.
But, it's important to note that experiences aren't always the same. A few found that while it stopped further damage, the repairs weren't totally invisible.
So, if you've got small, surface-level damage, the Rain-X 600001 kit can be a decent and budget-friendly alternative to going to a pro.
Just keep in mind that it might not completely return your windshield to its original look, but for small fixes, it's a handy option.