Remove insect and other stains with PPF film cleaner immediately.
Light scratches will self-heal in 30-35 minutes at room temperature. To accelerate the process, pour warm water over the affected area.
Do not use pressure washing near exposed film edges, it can cause the film to lift and become damaged.
Detailing clay can be used to remove contaminants that are on the film.
Seal with a quality automotive paint sealant and apply wax at least once every 2-3 months to preserve high glass. Use synthetic wax that contains no color resins. Naturally occurring waxes are not recommended. If wax or dust should appear around the edges of the film, use a cotton swab dipped in 70% (or less) isopropyl alcohol, then gently wipe away from the edge of the film (not into it).
While you can wax the film, be sure the product you are using doesn't contain Naphtha or Kerosene in concentrations over 5%, and do not use waxes that contain dyes.
Normal periodic washing.
When claying the film, use the same process as with regular paint. Wet the surface with a lubricant such as soapy water and then gently rub the surface with the clay bar.