The decontamination stage is one of the most important steps in car detailing. Tiny bonded contaminants, such as iron particles, tar, and road grime, can remain on the surface, preventing your paint from feeling smooth and interfering with polishing or protection steps. Decontamination removes these impurities, leaving behind a clean and smooth surface that is ready for your next detailing step, whether that is applying a protective layer or polishing away imperfections. The decontamination step can include chemical products like iron removers, tar removers, and degreasers, along with the use of quick detailers to assist with light cleaning and lubrication.

Grab Your Gear!

• Iron Remover, Tar Remover, Degreaser or Quick Detailer.
• Brush, Wash Mitt or Towel
• Drying Towel

What are Iron Removers?

Iron removers target embedded ferrous particles, which are tiny, microscopic pieces of iron from sources like brake dust and industrial fallout. This form of contamination will embed into exterior surfaces, causing anything from rough textures, discoloration, and even leading to rust or permanent damage over time as they oxidize and bond with the clear coat.

When Iron Removers are sprayed onto the paint, they chemically react with these particles and dissolve them safely. You will often see a purple or red color change as the product works and after letting it dwell for a few minutes, simply rinse thoroughly to reveal a smoother surface.

What are Tar Removers?

Tar removers are designed to break down sticky residues such as asphalt, tar, and adhesive left from road debris or decals. These solvents soften the contaminants, allowing you to wipe them away gently without aggressive scrubbing. They are especially useful for lower panels and behind wheels where tar buildup is common.

What are Degreasers?

Degreasers are powerful solvent based cleaners made to cut through heavy grime, grease, oils, and road film. They are typically used on engine bays, wheel wells, and other heavily soiled areas before washing. When using degreasers on painted surfaces, choose a detailing-safe formula or dilute to the recommended level and always follow with a thorough rinse to ensure no residue remains.

What are Quick Detailers?

Quick detailers are versatile products that can help with light cleaning, adding gloss, and providing lubrication during clay bar or towel based decontamination steps. They are ideal for removing light dust, fingerprints, or leftover residue after other decontamination steps and when used correctly, they help maintain a streak free, glossy finish while reducing the risk of marring.

What About Bug Residue and Bird Bombs?

The issue with bug residue and bird bombs is that both are often acidic and can etch into your clear coat if left to sit on the surface too long, especially in the hot sun. While most of the options listed above work great, some brands have specific options for this type of removal. Any of these cleaners will help loosen the residue for easy wiping or rinsing, often before or during the wash process. Remember the key is removing these quickly, to avoid any of the acids etching into the surface, requiring correction for removal.

How to Properly Apply Your Decontamination Product

1. Thoroughly clean any loose contamination from the surface with your wash process, ideally in the shade
2. On a wet surface, spray your decontamination product
3. Let the solution dwell on the surface
4. Agitate with a brush, mitt, towel or sponge if needed
5. Rinse away thoroughly
6. Dry the surface with your drying towel

Pro Tips

• Always work on a cool surface and out of direct sunlight. Heat speeds up the drying of chemicals like iron or tar removers, which can lead to streaking or reduced effectiveness. Shade and a cool panel give you more control and better results.
• Pre-rinse or wash thoroughly before using a decontamination product. A strong rinse helps remove loose dirt and debris, allowing you to target specific contamination areas directly.
• Let the products dwell, but never dry. Most decontamination chemicals need a few minutes to react with contaminants. Allow them to sit as directed, but keep an eye on the surface to ensure they never dry out. Re-mist with product or water if needed.
• Agitation can boost effectiveness and efficiency. For stubborn areas, use a dedicated microfiber towel, wash mitt, or soft detailing brush to gently agitate the product. This is especially useful for tar removers, or when cleaning intricate areas like grilles and emblems.
• Always rinse and dry thoroughly after cleaning. This ensures no chemical residue remains on the surface, which can cause streaking or ever interfere with the product use on your next detailing step.

Related Articles

• What is That? Common Contaminants & How to Remove Them
• How to Remove Bird Poop from Your Paint
• Safe Removal of Bug Splatter
• Ask DI: How to Remove Artillery Fungus Spores from Car Paint and Windows
• Ask DI: How to Remove Sap from Car
• Ask DI: How Do I Remove Iron Deposits?
• Why Degreasing Is So Important
• Detailing Essentials #1 | Stoner Tarminator
• How Do I Remove Tree Sap From My Car?
• The Importance Of A Quick Detailer
• Read All Decontamination Articles