I accidentally used windex cleaner on an expensive chrome light fixture and over time it left ugly marks on the shiny chrome finish (probably from the ammonia in the windex).

After using simichrome, the chrome looked brand new.

Just make sure the area is well ventilated if you are using this indoors as it has a strong odor since it contains naphtha and kerosene. I was actually considering not using this because the warning sticker on the box:

"Hazard statements: HARMFUL IF INHALED. HARMFUL OR FATAL IF SWALLOWED. CAUSES EYE IRRITATION. CAUSES SKIN IRRITATION. Can enter lungs and cause damage.

Precautions: Keep out of the reach of children. Use only with adequate ventilation. Do not breathe vapor or mist. Do not swallow.  Avoid contact with eyes. Avoid contact with skin and clothing. Keep container tightly closed and sealed until ready for use. Wash thoroughly after handling.

Contains: Naphtha (petroleum), hydrodesulfurized heavy; Kerosene (petroleum); ammonium oleate"
I accidentally used windex cleaner on an expensive chrome light fixture and over time it left ugly marks on the shiny chrome finish (probably from the ammonia in the windex). After using simichrome, the chrome looked brand new. Just make sure the area is well ventilated if you are using this indoors as it has a strong odor since it contains naphtha and kerosene. I was actually considering not using this because the warning sticker on the box:

"Hazard statements: HARMFUL IF INHALED. HARMFUL OR FATAL IF SWALLOWED. CAUSES EYE IRRITATION. CAUSES SKIN IRRITATION. Can enter lungs and cause damage. Precautions: Keep out of the reach of children. Use only with adequate ventilation. Do not breathe vapor or mist. Do not swallow. Avoid contact with eyes. Avoid contact with skin and clothing. Keep container tightly closed and sealed until ready for use. Wash thoroughly after handling. Contains: Naphtha (petroleum), hydrodesulfurized heavy; Kerosene (petroleum); ammonium oleate"