How long does Optimum Gloss-Coat last?

Optimum rates it at up to three years of protection, longer than the two years many competing coatings claim. Real-world life depends on prep, curing and how the car is washed and stored.

Can I use Gloss-Coat on glass?

No. Optimum recommends against it on glass and points to its glass-specific coating, Opti-Glass, instead. Gloss-Coat is meant for paint, wheels, chrome, trim, bumpers and aluminum.

How hard is it to apply?

Optimum describes a six-step process, and the coating is dry to the touch in about 30 minutes. The hard part is the prep: the paint must be clean and decontaminated, and you need a dust-free space.

Do I need a topper to keep it beading?

No. Optimum says the hybrid SiC and SiO2 formula beads water on its own and no toppers are needed to maintain the hydrophobic effect.

Is the two-vehicle kit worth it over a single kit?

If you plan to coat two cars, or a car plus its wheels and trim, the two-vehicle kit saves you from buying twice. For one car, a single kit is the better fit.