Wash
Almost every swirl mark on a car was put there during a wash. A coating does not change that. It means the marks are now sealed under something hard and clear.
Two things matter and nothing else does much: a shampoo with no cutting agents in it, and a method that keeps grit off the paint once it is off the paint.
Gtechniq
GWash Shampoo
A pH-neutral shampoo with no gloss additives or wax in it.
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Gtechniq built its business on professional coatings, and this is the shampoo written to go over them: it cleans and leaves nothing behind that could mask the coating underneath.
Product details & buying advice
Gtechniq Car Shampoo. Auto W1 GWash Shampoo for Cars. Dirt and Stain Remover Car Cleaning Kit with Pink Grapefruit Fragrance. 100% Biodegradable Foam Cleaner, Wheel Cleaner and Screen Wash - 500ml
Gtechniq built its business on professional coatings, and this is the shampoo written to go over them: it cleans and leaves nothing behind that could mask the coating underneath.
Consider: It will not make the car shine on its own, which is the point and disappoints people expecting a wax shampoo.
Product instructions from GtechniqThe alternatives
Same job, different trade-offs.
Autofiber
Microfiber Wash Mitt
A long-pile microfiber mitt.
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Deep pile carries grit up away from the paint instead of dragging it along the surface, which is the entire job of a mitt and the one thing a sponge cannot do.
Product details & buying advice
Autofiber Zero Cuff Microfiber Wash Mitt - Pack of 1, Blue (7 inch x 9 inch)
Deep pile carries grit up away from the paint instead of dragging it along the surface, which is the entire job of a mitt and the one thing a sponge cannot do.
Consider: Wash it separately from everything else and never with fabric softener, which kills it.
Product instructions from Autofiber
Grit Guard
Bucket Insert
A grid that sits in the bottom of a wash bucket.
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The highest-value thing on this site for the money.
Product details & buying advice
Grit Guard The Original Red Bucket Insert - 10" Diameter Car Wash Bucket for Car Washing, Detailing Compatible with 3.5, 4, 5 and 6 Gallon Buckets
The highest-value thing on this site for the money. It traps grit under the grid so the mitt cannot pick it back up, and it prevents more paint damage than any product here.
Consider: Needs a bucket wide enough to take it. Two buckets means two guards.
Product instructions from Grit Guard
Koch-Chemie
Nanomagic Shampoo
A German trade shampoo with a slickness additive.
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This turns up on professional price lists rather than in consumer marketing, which is usually a good sign.
Product details & buying advice
KOCHCHEMIE NanoMagic Shampoo - Auto Soap with Gloss Cleaning, Water-Repellent, Nano Shampoo Layer (1 Liter)
This turns up on professional price lists rather than in consumer marketing, which is usually a good sign. Very slick, so the mitt drags less across the panel.
Consider: Priced for a business buying by the liter. For one car a year it is more than you need.
Product instructions from Koch-Chemie
Gyeon
Q²M Bathe
A neutral maintenance shampoo from a coating manufacturer.
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A company that also sells the coating has no reason to put anything in the shampoo that shortens it.
Product details & buying advice
Gyeon Bathe pH Neutral High Lubricity Car Wash Soap for Ceramic Coatings
A company that also sells the coating has no reason to put anything in the shampoo that shortens it. High foam, which makes it easier to see where you have been.
Consider: Dilution matters more than with supermarket shampoo. Guessing wastes it.
Product instructions from Gyeon
Adam's Polishes
Car Wash Shampoo
A high-foam neutral shampoo sold for use with a foam cannon.
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Built for the pre-wash foam step rather than the bucket, so it is the one to pair with a cannon.
Product details & buying advice
Adam's Polishes Car Wash Shampoo (Gallon) - pH Best Car Wash Soap For Snow Foam Cannon or Gun For Pressure Washer & 5 Gallon Bucket, Powerful Safe Spot Free Cleaning Liquid Auto Detergent
Built for the pre-wash foam step rather than the bucket, so it is the one to pair with a cannon.
Consider: Foam is not cleaning. It looks impressive and still needs a mitt afterwards.
Product instructions from Adam's Polishes
Meguiar's
Gold Class Car Wash
A widely stocked neutral shampoo.
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Available in any parts store, which matters more than it sounds when you have run out on a Saturday.
Product details & buying advice
Meguiar's Gold Class Car Wash, 1 Gallon
Available in any parts store, which matters more than it sounds when you have run out on a Saturday. Neutral enough not to strip a coating.
Consider: Contains conditioners that add their own gloss. Harmless, but it is doing something on top of your coating rather than just cleaning it.
Product instructions from Meguiar'sChoose shampoo for the wash you actually do
| Your task | What to look for | What to check |
|---|---|---|
| Routine coated-car wash | Compatible maintenance shampoo | Check the coating guidance, dose and rinse directions. |
| Adding protection during washing | A specifically intended protective wash | This changes the surface finish; it is not necessary at every wash. |
| Bonded contamination | A targeted treatment after inspection | More shampoo does not replace iron, tar or mineral treatment. |
Plan the purchase and application
- Read the dose for your bucket or foam setup.
- Divide bottle volume by that dose to estimate washes.
- Divide the current bottle price by estimated washes; compare the same setup.
Prices come from Amazon and update hourly. We earn a commission on anything bought through these links, at no extra cost to you, and no brand paid to be here.
The full aftercare routineQuestions
What soap can I use on a ceramic coated car?
Gtechniq GWash Shampoo. A pH-neutral shampoo with no gloss additives or wax in it. Gtechniq built its business on professional coatings, and this is the shampoo written to go over them: it cleans and leaves nothing behind that could mask the coating underneath.
Can I use dish soap on a ceramic coated car?
No. Dish soap is built to strip grease and it takes the sacrificial top layer of the coating with it. One wash will not destroy anything, but a routine of it is the most common reason a coating stops beading a year early. Any shampoo labeled pH-neutral costs about the same and does not do that.
How often should a coated car be washed?
Every two weeks is a reasonable default, more often where roads are salted. A coating makes washing faster rather than less necessary: contamination still lands on it, and bird droppings or hard water left to bake on will etch the coating the same way they would etch paint.
Do I need a pressure washer?
No, but a pre-rinse of some kind matters more than which shampoo you buy. The point is to move loose grit off the panel before a mitt touches it. A hose does that. A pressure washer with a foam cannon does it better.