Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to instantly remove oxidation from headlight without sandpaper [title] If we take this from a scientific approach we must look at the problem as a doctor would when he diagnosed a problem. [step] Is the problem oxidation? Or is it something else? [title] Understand oxidation. [step] Oxidation is a flat opaque covering that lays evenly on the surface of the lens, it will start out white turn yellow and eventually brown.

Ending1: Usually, it looks like trapped air trapped inside and its very difficult to remove. Ice crystals form, out of these then the gas particles releases under the surface when oxidation ends. Ending2: It can build up and block all light from leaving the lens. It is semi-smooth to the touch. Ending3: And the clarity of the white portion of the lens cracks when it is applied. [title] Did you know that quickdown, fast powder oxidation and quick change to more demure mode? [title] Try this on a clean lens. Ending4: This reflects light, and helps to break down oxidation. It takes some diy to get it off, and oxidation is very simple.

Answer format: ending1/ending2/ending3/ending4