To clay bar a car, wash it, remove iron and tar first, then glide clay over a well-lubricated panel with light pressure until the paint feels smooth, folding the clay to a clean face as it picks up dirt. Our SOFT99 Surface Smoother Mini is lubricated with plain water. Protect the paint straight afterwards. Browse every clay bar we stock.
What does a clay bar do?
A clay bar lifts bonded contamination that a normal wash leaves behind, the specks you can feel as roughness when you run a hand over clean paint. It is preparation work: a smooth, clean surface lets polish, wax, sealant or a coating go on evenly and bond properly.
Clay is not a cleaner for loose dirt. If grit is still on the car, the clay drags it across the paint, which is why the wash and the chemical stages always come first.
Does your car need claying?
Only when the paint still feels rough after a thorough wash and an iron fallout remover. Slide the back of your fingers over a clean, dry panel inside a thin plastic sandwich bag: if it feels gritty rather than glassy, there is bonded contamination left for the clay. If it already feels smooth, skip the clay and go straight to protection.
Claying is occasional decontamination, not part of a routine wash. It fits before polishing or before long-lasting protection, as set out in our guide to the correct order to detail a car.
What do you need to clay a car?
A clay bar or clay sponge, a slick lubricant, clean microfibre towels, and the products for the stages either side of the clay. Every pick below is in stock with us.
Clay
A 100g clay bar for removing visible and invisible contamination from paintwork before a wax or coating. It is lubricated with plain water, and a bar that has gone hard in the cold softens in lukewarm water, never hot.
An 11 x 7 x 4.5 cm sponge with a polymer layer that takes the place of a bar, for tar, resin, asphalt and insect remains. Use it on a wet car with a clay lubricant, glide it without pressing and rinse it often in clean water. Keep solvent-based products away from it, because they dissolve the sponge.
Lubricant
A pH neutral, 2300:1 shampoo with no gloss enhancers or waxes. A few millilitres in a spray bottle topped up with water makes a slick clay lubricant, and 7ml to 10ml in a 15 litre bucket washes the car first.
A carnauba wax and silicone quick detailer that also works as a clay lube, in 500ml and 1L bottles.
Before and after the clay
A pH-neutral iron fallout remover for paint and wheels that turns purple as it reacts. Used before claying, it takes out the iron the clay would otherwise have to lift. Spray it on cool panels and never let it dry.
Duel BlackJack Tar & Glue Remover
Dissolves tar spots in 2 to 3 minutes so they wipe away with a microfibre. Use it after washing and before the clay, on a cool surface out of direct sun, and keep it off headlight covers and plastic trim.
An ultra fine polish that removes light swirls and holograms by machine or by hand, for any light marring the clay leaves.
A sealant of silicone polymers and silica resins for paintwork and wheels, with a durability of 9 months. Mist it onto a microfibre applicator, spread it in straight lines, give it 1 minute to bond, then buff with a short pile towel.
Clay bar, clay sponge or clay mitt?
All three do the same job: they lift bonded contamination from clean, lubricated paint. The difference is how you handle them. A clay bar is kneaded and folded to a fresh face as it picks up dirt, and a bar that touches the ground has to be thrown away.
A clay sponge, such as the ChemicalWorkz Clay Sponge, carries a polymer layer in place of clay. It glides over a wet car with clay lubricant and no pressing, you rinse it in clean water as you go, and after use it is rinsed, dried and kept away from dust for the next time. Solvent-based products dissolve it, so keep tar and glue removers well away. Clay mitts and pads work the same way as the sponge, with the polymer layer on a mitt you wear or a pad you hold. Browse our clay mitts, pads and sponges.
What can you use as clay lubricant?
Use the lubricant the clay itself is made for, and use plenty of it. The SOFT99 Surface Smoother Mini works with plain water; the ChemicalWorkz Clay Sponge needs a clay lubricant; a weak mix of Autobead Pure Shampoo and water or a quick detailer such as Citrus Bling also does the job. Whatever you use, the clay should glide, never grab or squeak.
| Product | Type | Lubricant | Best for | Notes |
|---|---|---|---|---|
| SOFT99 Surface Smoother Mini | Clay bar, 100g | Plain water | Bonded contamination before wax or a coating | If it is dropped, do not use it |
| ChemicalWorkz Clay Sponge | Polymer clay sponge, 11 x 7 x 4.5 cm | Clay lubricant | Tar, resin, asphalt and insect remains | Solvents dissolve it; rinse it often |
| Autobead Pure Shampoo | pH neutral shampoo | A few ml in a spray bottle of water | A low-cost lubricant mix | No gloss enhancers or waxes |
| ValetPro Citrus Bling | Quick detailer | Used as it comes | Clay lube that also adds gloss | Carnauba wax and silicone |
How do you clay bar a car step by step?
Work one small section at a time, on a cool panel out of direct sun, and keep the surface wet with lubricant the whole time.
- Wash and rinse: wash the car thoroughly so no loose grit is left to drag across the paint.
- Remove iron and tar: use an iron fallout remover, then a tar remover on any spots, and rinse well.
- Pick a calm spot: work in the shade, never on a hot panel, and not in sandy, dusty or windy conditions.
- Prepare the clay: flatten a piece of bar into a disc that fits your fingers, warming a hard bar in lukewarm water first.
- Lubricate: spray the section and the clay generously with the right lubricant.
- Glide: move the clay over the section with light pressure in straight lines until it runs smoothly.
- Turn to a clean face: fold the clay as it picks up dirt, or rinse the sponge in clean water.
- Wipe and feel: dry the section with a clean microfibre and check it by touch before moving on.
- Finish the car: rinse or wash off the lubricant, polish if needed and protect the paint.
Do you clay bar a car wet or dry?
Always wet. Clay should never touch dry paint: without lubricant it grabs and can mark the finish. Keep the section and the clay slick, re-spray as soon as it starts to drag, and with a clay sponge keep the whole car wet from the wash.
Do you need to polish after claying?
Not always, but check. Clay can leave light marring, so look at the panel in good light once it is dry. If you see fine hazing, a finishing polish such as Autobead Finishing Compound, used by machine or by hand, takes it out. Our guide to compound vs polish explains which to reach for.
Either way, protect the paint straight afterwards. A freshly clayed panel is the ideal base for a wax, a sealant or a coating, and leaving it bare wastes the work.
Common questions
How often should you clay bar a car?
Only when the paint feels rough again after a wash and an iron remover. On a car that is washed and protected regularly, that is an occasional job rather than a routine one.
Does a clay bar scratch paint?
It can if it is dirty, dry or dropped. Plenty of lubricant, light pressure and a clean face keep the risk low, and any light marring polishes out. A piece of clay that falls on the ground picks up grit, so throw it away rather than risk the paint.
Can you clay a matte car?
No. We keep clay bars off matte finishes, just as we do polishes and compounds. Our guide on how to wash a matte car covers what is safe on that finish.
Can you clay bar a car in cold weather?
Yes, on a dry, frost-free day, but the clay goes hard in the cold. Soften the SOFT99 bar in lukewarm water before you start, never hot water, and keep the car out of the wind so grit does not blow onto the wet panels.
How do you store a clay bar?
Keep the SOFT99 bar sealed in its case, out of direct sunlight, below 40 degrees C and away from damp and frost. Rinse the ChemicalWorkz Clay Sponge thoroughly in clean water after use, let it dry and store it away from dust.
Need help choosing?
Tell our team what your paint feels like after a wash and what protection you plan to use, and we will help you pick the clay and lubricant. You can also browse our clay lubricants, clay mitts, pads and sponges and iron fallout removers.
