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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From the manufacturer’s Safety Data Sheet, Section 8
“H320 (Eye Irritation Cat 2B) in SDS §2 · mild irritation potential from pump-spray mist. Situational for spray application; splash goggles are not required for directed away-from-body use at normal outdoor application distances.”
— PROJE'
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“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.
From the manufacturer’s Safety Data Sheet, Section 8
“H316/H313 (skin codes) · mild irritation potential at extended contact; SDS §8 specifies gloves for repeated handling.”
— PROJE'
U.S. regulatory standard
29 CFR 1910.138(a)
“appropriate hand protection when employees' hands are exposed to hazards such as those from…”
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
“No respiratory H-codes in SDS §2 (no H332, H335, H330, H331). Citric acid at pH 6, water-based formula, IPA ≤1%. Situational for enclosed-space use only; outdoor pump-spray application carries negligible inhalation risk from this chemistry.”
— PROJE'
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.
This product ranks #4 of 7 in Water Spot Remover (Paint).Three above it ↓
Last reviewed May 26, 2026
TL;DR A mild acid formula for painted panels · near-neutral pH limits its punch on multi-season baked-on scale, but makes it one of the gentler choices in the category. **For painted surfaces only.** WARNING-level chemistry on the SDS.
This RTU spray dissolves mineral deposits through chelation: it binds calcium and magnesium ions and lifts them off clear coat without aggressive acid dissolution. Spray on a shaded panel, dwell 30 seconds, then rinse or wipe with a quick detailer. Owner feedback on Amazon, still a modest base, reports fresh deposits clearing in one pass. Independent forum evidence on heavily baked-on seasonal scale is absent · the near-neutral pH chemistry is gentler than the lower-pH formulas that lead the category, which limits performance on severe contamination.
Good fit for owners with fresh-to-moderate mineral deposits from hard tap water or occasional sprinkler overspray on painted panels. The near-neutral pH is chemically unlikely to strip ceramic coatings, though independent community confirmation has not been found. Buyers whose primary problem is glass water spots should choose a glass-specific water spot remover.
WARNING signal word from the SDS. H316, H313, and H320 are the lowest tier of each GHS health category · mild chemistry. No respiratory H-codes in SDS §2; outdoor pump-spray carries negligible inhalation risk. No aquatic toxicity codes confirmed in SDS §12; citric acid is biodegradable in aerobic conditions (unconfirmed in SDS).
The brand markets this product as safe on ceramic-coated vehicles, and the near-neutral pH (6 per the SDS) is inherently coating-compatible from a chemistry standpoint · a pH 6 acid solution cannot strip a properly cured ceramic coating the way a lower-pH formula could. That said, the CCT page scores paint-and-coating safety at 6.0 because independent community verification on ceramic-coated surfaces (from detailing forums, not brand-platform reviews) has not been found. If your vehicle has an expensive ceramic coating, test a small section first.
PROJE' markets this for glass, paint, and metal. However, this product is categorized and scored here as a painted-surface water spot remover. If your primary concern is water spots on windshields or other glass, a glass-specific water spot remover is the better choice · the acid chemistry optimized for glass removal differs from what's best for painted clear coat, and the two product types are not interchangeable.
The SDS confirms citric acid at a near-neutral pH of 6 · much milder than the phosphoric acid (pH 2·4) or oxalic acid formulas found in heavy-duty water spot removers. Citric acid works via chelation (binding calcium ions) rather than aggressive acid dissolution, which limits performance on severely baked-on, multi-season mineral deposits but makes the chemistry gentler on paint and coatings. For fresh or moderately weathered spots, the mild acid should be adequate.
The SDS carries a WARNING signal word from H316 (mild skin irritation) and H320 (mild eye irritation) · both are the lowest tier of each GHS category. These codes reflect the raw citric acid in the formula, not unusual hazards. Situational gloves make sense for extended handling or repeated use sessions; for a quick spray-and-wipe on a few panels, the chemistry does not demand full PPE. Avoid spraying toward your face.
The 'For Glass, Paint & Metal' claim on the PROJE' label is from the brand's marketing. This product page evaluates it as a painted-surface water spot remover because that is how the water-spot-remover category is defined here · the acid chemistry (citric acid, pH 6) is within the paint-safe range and the product has no disqualifying HF compounds. The glass claim is noted as unverified from a glass-specific standpoint. If you need a glass water spot remover evaluated as such, look for a product in the glass-water-spot-remover category.
Marketing copy from PROJE', via Amazon. Not editorial.
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