Meguiar's Perfect Clarity Glass Polishing Compound

This is an aluminium oxide abrasive slurry designed to clean and restore automotive glass — not to remove wiper arc scratches. Amazon reviews document the cleaner-glass use case well: long-neglected windshields with years of buildup return to like-new clarity, and at least one reviewer confirmed removal of a stubborn rust stain from a windshield. Apply with a foam or felt applicator pad by hand or DA polisher, work the product across the glass surface in overlapping sections, and wipe off. The manufacturer recommends following up with a glass cleaner, and community reviewers confirm this is standard practice — a residue clean-up step is expected, not a sign of failure. Post-polish clarity is good once the follow-up wipe is done.

The right buyer is someone dealing with glass hazing, hard water spots, mineral deposits, or accumulated road film that glass cleaner cannot touch — this product addresses those problems with confirmed community evidence behind it. It also works well as a maintenance polish before applying a glass coating. Anyone trying to remove wiper arc scratches should skip it: the manufacturer's own label states clearly this is not a scratch remover, and community reviews corroborate that no scratch removal occurs. For actual wiper arc scratch removal, a dedicated cerium oxide glass polishing compound is the appropriate tool. Machine-compatible buyers can use a DA polisher, though hand application is well documented and just as effective for the contamination removal use case.

The EU REACH SDS (Meguiar's UK Ltd, revised November 2019) classifies this product as WARNING with H317 (Skin Sensitization Cat 1A) and H319 (eye irritation Cat 2). The H317 classification is driven by the CMIT/MIT biocide preservative (CAS 55965-84-9) at ≤0.002% — a potent skin sensitizer at trace concentrations. H317 (Skin Sensitization Cat 1A) mandates nitrile gloves during application and cloth handling per SDS §8. No respiratory H-codes appear in SDS §2, and the pre-mixed aqueous formula generates no significant vapour — the lungs PPE category is omitted. The product carries H412 (harmful to aquatic life with long lasting effects) at the mixture level, driven by the anionic surfactants; the environment score reflects the drain-destined pathway through pad and cloth laundering. No Prop 65 warning. Note: the only available SDS is the EU REACH format (Meguiar's UK Ltd, 2019); the US GHS SDS remained Akamai-blocked at time of research and should be retrieved on a future improvement pass to confirm current US classification.