Gtechniq C4 Permanent Trim Restorer is a professional-grade ceramic trim coating that restores faded exterior plastic trim at the molecular level. Unlike dressings and conditioners that sit on the surface and wash off, C4 forms a covalent bond directly with the trim material itself, creating a durable optically clear coating that becomes part of the surface and lasts up to two years from a single application.

Restores rich, deep color to faded, oxidized, and grayed-out plastic trim, bumpers, fender flares, and moldings without the greasy sheen of oil-based dressings. The factory-natural appearance it delivers looks intentional and clean rather than overdressed. UV inhibitors built into the coating protect against future fading and oxidation so trim stays looking restored long-term, not just for a few washes.

If you are looking for the best permanent trim restorer for faded plastic, a long-lasting ceramic trim coating that actually bonds to the surface, or a professional Gtechniq product for restoring and protecting exterior plastic trim on cars and trucks, C4 is the benchmark product in the category. Available in 15ml and 30ml.