A paint sealant forms a transparent sacrificial layer over the finish. Dirt then meets the protection first, which can reduce adhesion and make routine cleaning easier.

The layer does not make contamination harmless. Bird residue, concrete, tar and tree sap can still stain or etch if left in place, and abrasive wiping can scratch both coating and paint.

Protection systems range from wax and polymer sealants to silica and ceramic coatings. Their preparation, curing, chemical resistance and maintenance intervals differ substantially.

Durability figures are conditional rather than guaranteed calendar periods. Mileage, outdoor exposure, washing chemistry, storage and aftercare all influence performance.

Separate products may be appropriate for wheels, glass, leather and textiles because each material faces different loads and safety requirements.

The old prices and six-year guarantees in this archive article no longer represent current AVP offers. A present-day recommendation follows inspection and a clear discussion of use.