The Secret German Trick That Makes Foggy Headlights Pop Like New

Your headlights are yellow. Tonight they give you a fraction of the light they had when new. That is A A A's finding, not mine. A badly hazed halogen lens loses most of its output. The dealer's answer is a new assembly. Six hundred to over a thousand dollars a side. The other answer costs about five dollars. Seven methods, seven down to one, ranked by how long the result holds. Number seven holds three days. Number one is the German trick, and it holds years. Number seven. Two hundred and twenty dollars, and it looks like a miracle for about three days. W D forty and bug spray. If your headlights are bad, you have already seen those videos. You spray it on, you wipe it off, and the yellow is gone in ninety seconds. It is the most convincing thing on this entire list. Three days. Here is what actually happened. W D forty is a light oil. Oxidized plastic is covered in microscopic cracks and pits, and the oil floods them. Light passes straight through a flooded surface instead of scattering off it. So the lens looks clear.