You should soak a faucet head or removable aerator in CLR (Calcium, Lime, and Rust) for no longer than 5 to 10 minutes. Because CLR is an industrial-strength chemical descaler containing harsh acids, letting metal parts soak too long can cause severe chemical pitting, corrosion, discoloration, and permanent damage to chrome or decorative PVD finishes. Callout type="warning" title="Hygiene Warning": Wear rubber gloves and eye protection when handling CLR. Verification: Remove the part promptly, rinse thoroughly with clean water, and check the finish for any signs of pitting.
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