For best results, and to get the most durability and longevity, you would want a scratch and swirl-free surface (a paint correction) ideally. And also a surface that is entirely clean and stripped free of waxes, polishes, solvents, and sealants (including TLC). Here's what we recommend: Step One: Wash your vehicle. Step Two: Decontaminate the paint surface with a clay mitt, clay bar or chemical removal. Step Three: (if paint requires it, if not move on to step four). Compound/polish (paint correction)the paint surface to remove swirls, defects and bring the surface to a high gloss. Step Four: Wipe down the vehicle with 70% isopropyl alcohol (IPA) on a microfiber and let the IPA air dry or use a surface prep cleaner. This will remove all waxes, polishing oils if used, and residue to ensure a clean surface. Step Five: Using a microfiber applicator, spray 2-5 sprays (depending on panel) of Deep Ice directly onto the applicator and then wipe on to paint surfaces in a hashtag type pattern. Then take a CLEAN microfiber towel to buff off Deep Ice to an extremely high gloss, slick finish. For larger vehicles use a new buffing microfiber towel halfway through to ensure full removal. Full removal is very important. Discard towels/applicator after use. Step Six: If additional layers are desired, wait 1 hour before applying the additional layer. Due to the minimal amounts used when applied, it is a great idea to do 2-3 layers of DEEP ICE. IMPORTANT: Wait 24 hours before water contact and a full 7 days before washing with high-pressure water or soaps, or exposing to harsh chemicals. The full cure time is 7 days.