Wash products
pH-neutral car shampoos compared
Fourteen car shampoos from nine makers: the pH words on the label, the pH on the maker's safety data sheet, what each says about coatings, and how much to mix per bucket.
Which car shampoos are pH neutral?
Twelve of the fourteen shampoos here are called pH neutral or pH balanced by their makers. Most of these makers publish a safety data sheet (SDS), and its section 9 lists the pH when the maker has a value. On the twelve sheets that give a number, it runs from 4.5 to 10. A pH of 7 is neutral.
- Label and sheet disagree: Griot's Garage Ceramic Wash & Coat (SDS pH 4.5) and P&S Pearl Auto Shampoo (SDS pH 10) are called pH neutral or pH balanced on their makers' pages, but their sheets are outside 5.0 to 9.0. Griot's Garage Ceramic Wash & Coat is below 7 (acidic), and P&S Pearl Auto Shampoo is above 7 (alkaline). P&S: the older 2017 SDS said “pH 8-9”. Gyeon Q²M Bathe's page says pH 6; its sheet says 8.
- No number: CARPRO Reset: No SDS found on the maker's site. Chemical Guys Mr. Pink: its SDS (7/11/2024) says “Not applicable (N/A)”.
- For ceramic coatings: Ceramic Pro's aftercare page says "Do NOT use any car soaps or shampoos with wax, petroleum distillates, or a pH under 5.0 or above 9.0." It does not say whether that means the bottle or the mixed wash, so we compare it with the product figure on the SDS. By that figure, Griot's Garage Ceramic Wash & Coat and P&S Pearl Auto Shampoo fall outside 5.0 to 9.0, and Meguiar's Ultimate Wash and Wax contains wax. Shampoos with no SDS number cannot be checked.
- Product, not bucket: each SDS gives the pH of the product itself and states no dilution. It is not the pH of your mixed wash water.
How much car shampoo per bucket?
Seven of the shampoos here have a bucket amount from their maker. Gyeon gives two figures that disagree, so it is left out. Pick one and enter the water in your bucket to scale that ratio.
Choose a shampoo to see how much to add.
Car shampoos compared
| Shampoo | Maker's pH words | pH on the SDS | Coatings | Bucket amount | Foam cannon | Wax or coating added | Sizes | Shop |
|---|---|---|---|---|---|---|---|---|
| Adam's Car Shampooproduct page, SDS | “pH neutral formula” | 7 – 7.8SDS dated 2024-11-22. | “will not remove wax, sealants, or degrade a ceramic coating” | Not stated | Not stated | None stated | 16 oz, 48 oz, gallon, 5 gallon | Search Amazon for Adam's Car Shampoo |
| Adam's Graphene Shampooproduct page, SDS | “pH 8-9” (a number, not “neutral”) | 8 – 9SDS dated 2024-11-22. | “without harming your existing coating, sealant or wax” | “2-3 fl oz” to “approximately 3 gallons of water” | “2-3 fl oz” to the reservoir, topped up with water (reservoir size not stated) | “Contains Graphene Ceramic Resins” | 16 oz, gallon, 5 gallon | Search Amazon for Adam's Graphene Shampoo |
| CARPRO Resetproduct page | “pH-neutral in solution” | No numberNo SDS found on the maker's site. | “Perfect for maintaining CQUARTZ coatings” | “1:500 (40mL of Reset per 20L of water / 1.35 FL OZ per 5 gallons)” | Not stated | “No gloss enhancers” | Not stated by maker | Search Amazon for CARPRO Reset |
| Chemical Guys Mr. Pinkproduct page, SDS | “pH-balanced” | No numberIts SDS (7/11/2024) says “Not applicable (N/A)”. | “won't impact any coatings” | “1 to 3 oz. to a 5-gallon bucket” | Says it works in a foam cannon; no amount stated | None stated | 16 oz, 32 oz, 64 oz, 1 gallon | Search Amazon for Chemical Guys Mr. Pink |
| Chemical Guys Honeydew Snow Foamproduct page, SDS | “pH-balanced” and “pH neutral formula” | ~7.49SDS dated 3/23/2026. | “safe for all exterior surfaces, including paint, wax, sealants, and ceramic coatings” | “1 to 3 oz to 5-gallon bucket” | “1 to 3 oz” in a “32 oz solution tank” | “gloss enhancers” | 16 oz, 64 oz, 1 gallon | Search Amazon for Chemical Guys Honeydew Snow Foam |
| Chemical Guys HydroSudsproduct page, SDS | “pH balanced” | ~8.75SDS dated 3/25/2024. | “safe for cars with ceramic coating” | “1 to 3 oz to 5 gallon bucket” | “1 to 3 oz” in a “32 oz solution tank” | “Infused with ceramic” | 16 oz, 32 oz, 64 oz | Search Amazon for Chemical Guys HydroSuds |
| Griot's Garage Car Washproduct page, product information, SDS, wash how-to | “pH-neutral” (product page) and “pH-balanced” (product information) | 8.0SDS dated August 25, 2022. | “doesn't disturb protective wax and ceramic coatings” | “1 oz” “creates 2 gallons of car wash soap” | Pairs with its foam cannon; no amount stated | None stated | 16 oz, gallon | Search Amazon for Griot's Garage Car Wash |
| Griot's Garage Ceramic Wash & Coatproduct page, product information, SDS | “pH balanced” (product information) | 4.5SDS dated 11/13/2020.SDS pH outside Ceramic Pro's 5.0 to 9.0. | “Ideal for maintenance of ceramic coated vehicles” | Not stated | Says it works in a foam cannon; no amount stated | “Add SiO2 Ceramic protection every time you wash” | 48 oz | Search Amazon for Griot's Garage Ceramic Wash & Coat |
| Gyeon Q²M Batheproduct page, US store, SDS | “pH-neutral” and “PH LEVEL: 6” | 8SDS dated 16.02.2026. | “It is pH neutral and safe for coatings and sealants.” | Two maker figures that do not agree: “1:500” and “15-20 ml” in “about 4 gallons” | Not stated | None stated | 500 ml, 1000 ml, 4000 ml | Search Amazon for Gyeon Q²M Bathe |
| Koch-Chemie Gentle Snow Foamproduct page, data sheet, SDS | “pH neutral” | 7SDS dated 30.04.2021.The maker's data sheet says “pH-value: 7,5”. | “does not corrode waxed or sealed surfaces” (ceramic coatings not stated) | “Pour 50 ml into 10 litres water” | “approx. 20 ml Snow Foam into 1 l water” | None stated | 1 L, 5 L | Search Amazon for Koch-Chemie Gentle Snow Foam |
| Meguiar's Gold Class Car Washproduct page, SDS | Not stated | 6 - 9SDS dated 08/18/25; the G71 SDS names the gallon G7101; Meguiar's ingredient page lists this 64 oz G7164 in the same G71 family. | “without removing preexisting paint protection, including waxes, sealants, and coatings” | Not stated | “diluted at 5:1” (the page does not say which part is soap) | “conditioners to further enhance gloss and shine” | 64 oz | Search Amazon for Meguiar's Gold Class Car Wash |
| Meguiar's Ultimate Wash and Waxproduct page, SDS | “pH neutral so it won't strip wax” | 7.5 - 9SDS dated 02/06/23. | “compatible with all Meguiar's washes and waxes” (ceramic coatings not stated) | Not stated | Not stated | “Carnauba wax and synthetic polymer technology” | 48 oz | Search Amazon for Meguiar's Ultimate Wash and Wax |
| Mothers California Gold High Performance Car Washproduct page, SDS | “pH balanced” | 7 - 9SDS dated 06-Jan-2022; the SDS the product page links, titled California Gold Car Wash. | “won't strip or harm your existing coating, sealant or wax” | Not stated | Says it works in a foam cannon; no amount stated | None stated | 16 oz, 48 oz, 64 oz, gallon | Search Amazon for Mothers California Gold High Performance Car Wash |
| P&S Pearl Auto Shampooproduct page, SDS, 2017 SDS | “pH balanced” | 10SDS dated 11/26/2024.The older 2017 SDS said “pH 8-9”.SDS pH outside Ceramic Pro's 5.0 to 9.0. | Not stated | Not stated | Not stated | None stated | Quart, gallon, 5 gallon | Search Amazon for P&S Pearl Auto Shampoo |
"Not stated" means the maker's pages we read do not say it. Sizes are the ones each maker lists for that product.
Questions
What is a pH neutral car shampoo?
One with a pH near 7, the neutral point. Makers write "pH neutral" or "pH balanced", but none of the pages we read says what range those words cover. The pH on the maker's safety data sheet (SDS) is a firmer figure. For the twelve shampoos here with one, it runs from 4.5 to 10.
Which car shampoo is safe for a ceramic coating?
Ceramic Pro says not to use soaps with wax, petroleum distillates, or a pH under 5.0 or above 9.0. By their SDS figures, Griot's Garage Ceramic Wash & Coat and P&S Pearl Auto Shampoo fall outside that range, and Meguiar's Ultimate Wash and Wax contains wax. Of those with an SDS figure inside the range and no wax, the makers of Adam's Car Shampoo, Adam's Graphene Shampoo, Chemical Guys Honeydew Snow Foam, Chemical Guys HydroSuds, Griot's Garage Car Wash, Gyeon Q²M Bathe, Meguiar's Gold Class Car Wash, and Mothers California Gold High Performance Car Wash say in words that theirs is safe with coatings. CARPRO Reset and Chemical Guys Mr. Pink also say so, but have no SDS pH to check against the rule. Ceramic Pro does not say whether its limit is for the bottle or the mixed wash; we compare it with the product figure on the SDS. Your coating maker's or installer's care sheet comes first.
How much car shampoo do I put in a bucket?
Follow your bottle. The seven shampoos here with a usable bucket amount from their maker work out to 0.2 to 1 fl oz per gallon of water, reading Chemical Guys' "5-gallon bucket" as 5 gallons of water. Use the mix check on this page to scale your shampoo's own figure to your bucket.
Is the pH on the SDS the pH of my wash water?
No. Each SDS here gives the pH of the product itself and states no dilution. At bucket strength, an ounce or two goes into gallons of water. CARPRO says Reset stays "pH-neutral in solution". Gyeon's page lists "PH LEVEL: 6" without saying whether that is the bottle or the mix. No other maker here gives a pH for its mixed wash.
Sources and limits
Each product's page, data sheet, and SDS are linked in the table, read October 24, 2026. The coating rule is from Ceramic Pro's aftercare page. An SDS pH is the maker's typical figure for one revision of the sheet. Nobody tested these products for this page. For the full wash routine on a coated car, see how to wash a ceramic coated car. To mix other cleaners from their label ratios, use the dilution calculator.
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