Microfiber towels used to apply or remove a traditional ceramic coating should be retired from paintwork rather than washed and reused. As the coating begins to cure, it can crystallize inside the towel’s fibers, potentially leaving scratches and swirl marks on a vehicle’s finish during a later detailing job.

How ceramic coating hardens in the towel

Many ceramic-coating kits include a small applicator pad. When one is not provided, a microfiber towel can be used, with towels rated around 250–350 GSM recommended for removing excess product before the coating cures.

The problem begins when uncured coating remains in the material. Crystals can form within minutes and become embedded deep in the fibers. Once hardened, those particles may drag across the paint the next time the towel is used.

Washing the towel does not necessarily solve the problem. Traditional ceramic coatings are solvent-based, and their particles may include silicon dioxide, titanium dioxide, and aluminum oxide. Warm water is not expected to break down those particles or remove them from the towel’s fibers.

Use contaminated towels for other tasks

Discarding microfiber towels after a ceramic-coating application may seem wasteful, particularly when several are needed to level and buff the product after it flashes. However, towels that have contacted a curing coating should not return to a vehicle’s painted surfaces.

They can still be kept for unrelated cleaning tasks, provided they are clearly separated from towels intended for paintwork. Their reduced water absorption may also indicate that the coating has changed the material’s performance.

Spray-on products are different

There is a possible exception for towels used with spray-on products marketed as ceramic coatings. Products from brands such as Turtle Wax and Meguiar’s are described as easier-to-apply alternatives, but they are not considered true ceramic coatings because they contain a lower concentration of silicon dioxide.

Microfiber towels used with those spray products may be reusable after thorough washing. That exception does not extend to towels used with traditional solvent-based ceramic coatings, which should be kept away from future paintwork to avoid preventable surface damage.