The Smart Film Preparation Wipes do exactly what they say on the packaging, they are to be used to prepare your lens to be dirt particle and dust-free before applying Smart Film. Firstly, use the alcohol wipe to clean the lens of any dust or oily substances. Then use the dry, lint-free cloth to minimise any particles on the lens. It is also advisable to use a compressor air gun to blow the surface of the lens to make sure it is completely debris-free before applying Smart film.