The majority of our jewelry is made with brass and require some extra care. With brass, moisture can cause discoloration. The best way to keep them new and beautiful is to scrub them with lime or lemon and salt and give them a nice wipe down every couple of wears and wellness will be restored.
Start with a whole lime or lemon. Cut it in half, width-wise, so you have a good-sized scrubber that will squeeze out lime or lemon juice as you rub. Sprinkle salt on the cut side of one of the halves. You can use whatever salt you prefer. Take the salted lemon half, and scrub the brass. The salt will work as a light abrasive, and the lemon juice will help remove grime. Work it in over all the brass.