There is absolutely no problem using this product over existing body coatings such as glass coatings.
"BELLTOPCOAT Motor Bike" is designed to have minimal impact on pre-applied coatings. It can form a protective film even on top of glass-based or polymer-based coatings, adding additional benefits such as water repellency, gloss enhancement, and reduced dirt adhesion.
It is especially popular for regular maintenance after coating application, as well as for restoring shine and reinforcing surface protection.
You can use it with confidence.