This is a great video showing the impact of white vinegar on built up minerals.
With Eclipse faucets you can use Scotch Bright pad or Mr Clean Magic Erasure with the vinegar.
The leak he has is the cartridge leak probably from built up minerals. The cartridge is inside the handle and turns the faucet on and off and mixes the hot and cold water.
Tom
https://youtu.be/aOudR7RiDJc