CarCareTruth Score
Decent.
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Prices may varyHealth 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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Translated from the manufacturer’s Safety Data Sheet, Section 2
H319 (Eye Irrit. Cat 2) is confirmed at mixture level in SDS §2 (reconfirmed on the 2026-07-25 re-source). SDS §8.3 additionally names eye protection (chemical goggles or safety glasses) directly, not boilerplate. Pump-spray application at windshield height creates a direct inhalation-adjacent mist pathway to the eyes. Safety glasses match the SDS eye-irritation chemistry for this working scenario.
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“The employer shall ensure that each affected employee uses appropriate eye or face protection when exposed to eye or face hazards from… liquid chemicals…”
ANSI Z87.1 (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.
Only when: prolonged use
Translated from the manufacturer’s Safety Data Sheet, Section 8
SDS §2 does not classify skin hazard at mixture level. SDS §8.3 names hand protection (wear protective gloves) and §2's P280 precautionary statement also calls for protective gloves/clothing, so this is a named SDS control, not generic boilerplate. 1-propanol and butyl glycolether carry skin-adjacent H-codes at ingredient level only, below the mixture-classification threshold. Nitrile gloves are reasonable for extended application sessions given the pH 4 acid chemistry.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
Only when: in enclosed space
Translated from the manufacturer’s Safety Data Sheet, Section 8
SDS §2 carries no respiratory H-codes at mixture level (no H332, H335, H330, H331). No deduction applies. SDS §8.3 names respiratory protection ('wear appropriate mask') as a specific control, so situational tier reflects a named SDS control, not generic guidance: avoid use in enclosed spaces.
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 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.
Scope of these PPE tiers. The tiers on this page translate the product's Safety Data Sheet where one is published, plus its ingredient chemistry, into a comparable rating. They describe a formulation, not a situation: a tier is not a safety determination for any specific user, task, quantity, or environment. The manufacturer's label and use instructions govern how the product is handled. Where the product is used at work, the employer's PPE program and hazard assessment under 29 CFR 1910.132 decide what protection is selected, not this page.
No warranties. CarCareTruth makes no warranties, express or implied, and expressly disclaims the implied warranties of merchantability and fitness for a particular purpose.
This product ranks #2 of 9 in Glass Water Spot Remover.
Last reviewed July 25, 2026
TL;DR Dissolves mineral deposits from glass, paint, wheels, and chrome in one pump-spray application. Labeled "Acid Free," but the SDS confirms pH 4, and that acidity is what does the actual work. Glass rinses optically clear with no follow-on cleaner needed. Handles light-to-moderate spots well; owners report mixed results on severe, long-standing deposits. WARNING signal word, H319 eye irritation: wear safety glasses.
A pump-spray acid formula, pH 4, dissolves calcium and mineral deposits from glass, paint, wheels, and chrome. Spray on, dwell briefly, then wipe or rinse; the mineral film lifts without scrubbing. Owner reviews run mixed, a notch below the category benchmark, with no independent forum confirmation on severe deposits. Glass rinses clear without residue per available reviews.
The right buy for moderate hard-water spots on glass, paint, wheels, or chrome that survive a normal wash. Confirmed safe for paint, glass, and chrome per brand disclosure, though a spot test is worth running on aftermarket paint-protection film or matte finishes first. Buyers with only fresh, light spots likely don't need a dedicated remover; results vary on heavier deposits.
SDS signal word is WARNING; H319 eye irritation is the only mixture-level classification. The acid itself is undisclosed in SDS Section 3 (proprietary), but the confirmed pH 4 places this as a mild-acid product, landing the health score at 6.2 after the eye-irritation and pH deductions. Wear safety glasses to match the SDS eye chemistry; no respiratory hazard codes apply. It rinses to the drain with biodegradability unconfirmed. No Prop 65 warning applies: the SDS is silent on Prop 65 rather than clearing it, and the resolution rests on no posted warning plus a clean ingredient chemistry check.
Not literally. The bottle and Amazon listing call it Acid Free Formula and Non Acid, but the SDS reports an exact pH of 4, which is acidic chemistry. The brand's claim most likely means the formula avoids harsh acids like hydrofluoric or phosphoric acid, not that it carries no acidity at all. The active acid ingredient itself is not disclosed in the SDS, which lists it as proprietary.
The SDS classifies H319 eye irritation at the mixture level and separately names eye protection, gloves, and a mask as controls in Section 8. Safety glasses match the confirmed eye-irritation chemistry for normal use. Gloves are a reasonable precaution for extended or repeated application given the pH 4 acid base, and a mask is worth using in an enclosed space like a closed garage bay.
It is community-confirmed to work on light-to-moderate deposits, dissolving the mineral film after a brief dwell time before wiping or rinsing. There is no independent forum confirmation of it clearing severe, long-standing, or etched deposits, and owner reception runs mixed. For heavily etched glass, a dedicated glass polish or a closer look at the surface may be a better first step.
McKee's 37 markets this as a multi-surface product, with Amazon feature bullets stating it is clear coat safe for paint, wheels, glass, chrome, and shower doors. That brand claim is the basis for treating it as safe across those surfaces. Tint film and matte-finish compatibility are not specifically addressed by the brand, so a spot test in an inconspicuous area is worth running first.
No Prop 65 warning applies to this product. the product listing shows no posted warning, and a chemistry check of the two disclosed ingredients, 1-propanol and butyl glycolether, against the current Prop 65 list found no match. The SDS itself does not address Prop 65 at all; it covers only federal TSCA and state right-to-know listings, so its silence is not being read as a clearance.
Marketing copy from McKee's 37, via Amazon. Not editorial.
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