Lavatory (Bathroom Sink) Faucet
Roman/Whirlpool Tub Faucets
Wet Bar Faucets
Mineral build-up or discoloration on the metal components (i.e. aerator, escutcheon, drain, shower head, tub spout, etc).
After time, green or white mineral deposits may build up on some components. Build-up is NOT a discoloration of the metal. It is a mineral build-up and chemical reaction caused by calcium, lime and/or other minerals found naturally in water.
Proper cleaning will easily remove this build-up.
A mild soap and water solution should be sufficient, however, a stronger vinegar and water solution (approx. 50/50) or gentle cleaning product (such as "Lime-Away" or "Soft-Scrub") may also be used. In serious cases, it might be necessary to soak the entire component in the vinegar solution for up to 24 hours.