CarCareTruth Score
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Prices may varyThe manufacturer's Safety Data Sheet classifies this product with one or more GHS Category 1 health hazards — the most severe tier. The hazard statements in quotes below are the verbatim GHS language from the SDS, as required by OSHA's Hazard Communication Standard. The line under each statement translates the GHS classification into plain language.
GHS Category 1 eye damage — classified as causing irreversible eye damage on contact.
If swallowed, inhaled, or splashed in eyes:
Call Poison Control immediately at 1-800-222-1222 (US, 24/7, free) and have the product container with you. Poison Control's standing guidance is to not induce vomiting after chemical exposure; they will direct first-aid steps based on the specific product.
About this product's hazards. This product's Safety Data Sheet uses signal word danger. Read the manufacturer's SDS and follow all safety instructions before use. CarCareTruth ratings translate the manufacturer's safety sheet. They do not replace the SDS or substitute for a hazard assessment specific to your task.
Health score is for adult use as intended, per the manufacturer's SDS. It does not model child ingestion, accidental spill cleanup, or off-label use. See the safety panel below for full hazard classification, and /disclaimer for the full editorial scope.
GHS hazard codes are quoted from the manufacturer’s Safety Data Sheet. PPE tiers below translate those codes and the listed ingredient chemistry; they are not CarCareTruth recommendations.
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From the manufacturer’s Safety Data Sheet, Section 8
“H318 (serious eye damage, Category 1) is classified at concentrate strength in the SDS (GHS05 pictogram). At the 1:300 working-solution dilution the aminosiloxane concentration drops well below the H318 threshold; the classification reflects concentrate handling. The H318 label on the SDS drives the required tier per site validation rules.”
— Gyeon
U.S. regulatory standard
29 CFR 1910.133(a)(1); 1910.151(c)
“The employer shall ensure that each affected employee uses appropriate eye or face protection when exposed to eye or face hazards from… liquid chemicals, acids or caustic liquids…”
ANSI Z87.1 (chemical splash protection — incorporated via §1910.6)
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“H315 (skin irritation, Category 2) is classified at concentrate strength. At 1:300 working-solution dilution the aminosiloxane concentration drops below the H315 classification threshold. Skin protection is relevant when handling the undiluted concentrate.”
— Gyeon
U.S. regulatory standard
29 CFR 1910.138(a)
“appropriate hand protection when employees' hands are exposed to hazards such as those from… chemicals which produce an adverse effect on the skin or eyes…”
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
No PPE specified in published sources for lungs. Absence does not imply “not needed” — consult the full Safety Data Sheet.
No PPE specified in published sources for ventilation. Absence does not imply “not needed” — consult the full Safety Data Sheet.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
This product ranks #3 of 21 in Car Shampoo.
Last reviewed June 14, 2026
TL;DR Cleans well and is safe on ceramic coatings, wax, and paint protection films at normal wash dilution, and the broad owner consensus backs that. Low foam is by design: the formula prioritizes lubricity and hydrophobic layering over suds volume.
Gyeon Q²M Bathe+ is a ceramic-infused maintenance shampoo that cleans road film while depositing a light hydrophobic layer on each pass. Use 15·20 mL per 10-liter bucket (1:300 working solution) or a few squirts in a foam cannon. The formula produces modest foam but a noticeably slick mitt glide · owners with ceramic-coated and wrapped vehicles consistently report no swirl marks and no protection stripping after months of weekly use.
Best for owners who have invested in a ceramic coating or sealant and need a weekly maintenance wash that reinforces rather than degrades their protection. Skip it if you want heavy foam for pre-wash visual coverage or need a dedicated strip shampoo before reapplying wax or a new coating · choose a strip-formulated product for that.
The SDS carries a DANGER signal word driven by H318 (serious eye damage, Category 1) at concentrate strength. At 1:300 working-solution dilution the aminosiloxane concentration drops below the H318 threshold, so the classification reflects the undiluted product. H315 (skin irritation) also applies only at concentrate. No Prop 65 warning on the product listing. One ingredient · C12-15 alcohols ethoxylated · carries ingredient-level aquatic toxicity data; SDS Section 12 reports no aquatic classification at the mixture level but the ingredient flag is factored into the environment score.
Yes. Multiple with ceramic-coated vehicles · including those using Gyeon's own Mohs coating · report no stripping or degradation after months of weekly use. The SDS-confirmed pH 7 means the wash solution is neutral at any dilution, which is the key requirement for coating maintenance. This is the primary reason buyers in the ceramic-coating community choose it.
No. The product listing carries no Prop 65 warning, and none of the ingredients at the concentrations listed in the SDS appear on the current Prop 65 enforcement list with active warnings for this product type.
The Amazon application instructions show 15·20 mL per 10 liters of water (roughly 1:500 to 1:300). At that ratio a 1000 mL bottle covers 50·65 washes. Several owners note the bottle's built-in pump dispenser makes measuring easy and prevents over-dosing.
No, and that is by design. Multiple owners explicitly note minimal foam but outstanding results. The ceramic-infused formula prioritizes hydrophobic protection and lubricity over foam volume. If you need heavy suds for a foam cannon pre-wash, a conventional high-foam shampoo is a better fit for that step.
Bathe is Gyeon's standard wash formula; Bathe+ adds the ceramic/siloxane additive intended to boost hydrophobicity on coated surfaces and leave a water-sheeting layer after each wash. The practical difference is most noticeable on ceramic-coated paint where owners report longer-lasting beading with the Plus version. For uncoated paint, the standard Bathe is a cheaper per-wash option.
Yes, though owners note foam volume is lower than dedicated foam-cannon shampoos. Several report satisfactory results at normal foam-cannon dilution. The low foam is a formula characteristic, not a defect.
The SDS-confirmed pH 7 formula is compatible with paint, glass, rims, plastic trim, and rubber. The product listing and multiple owners confirm use on wrapped vehicles. No surface-damage complaints appear across a large base of owner reviews.
One ingredient · C12-15 alcohols ethoxylated · has confirmed aquatic toxicity data at the ingredient level. SDS Section 12 reports no aquatic hazard data for the product mixture, but the ingredient-level flag is reflected in the environment score.
Marketing copy from Gyeon, via Amazon. Not editorial.
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