How do I clean tarnished bathroom sink faucets?

Combine equal parts water and white vinegar if some discoloration remains. Wipedown the faucet with the solution. Use the toothbrush and vinegar solution to remove stains around the faucet base. For stubborn water spots, soak the rag in the solution then lay it over the faucet

Good luck. It has been my experience that Lime-Away eats the finish off. Maybe you could paint them. For instance, I've seen black fixtures in the stores lately.

Good to know, same thing happened to me.

Brasso works great on Crome brass I got it on ebay

Here is how I clean mine https://chascrazycreations.com/clean-bathroom-natural-products/