If you mean Liquid Glass
I have been using it on 10 Corvettes since 1970s, living in very hot areas to real cold areas with snow/ice
This was designed for Corvettes, fiberglass, used on airplanes to reduce drag
Few years back the private owner of LG sold to another business, but they were cheap asses and changed the name of product
and past owner felt the new company was screwing up the long history of the product and bought the product back
Now Liquid Glass is back the way it was
All needed is I put one coat on in the spring and then 1 coat in late fall
Works on Windows, lights, etc, not for tires, rubber parts.
You can buy each of the below or as a set like Amazon
