If you're a Bremerton, WA driver who hates being blinded by glaring headlights from the car behind you, an auto-dimming rearview mirror may be a solution that can lower your stress on the road. This type of mirror eliminates the need to flip a switch when driving at night. Not only are they convenient, but they also have the potential to ease eye fatigue, limit distraction, and improve safety.
How auto-dimming rearview mirrors work is quite interesting. A concept known as electrochromism is at play. It causes a color change in the presence of an electric current. Auto-dimming mirrors contain a layer of electrochromic gel between the glass.
When glare reflects off the mirror, sensors activate a current of electricity to the gel. This current changes the color of the gel, resulting in the dimming of the mirror. Once the source of the glare has been removed, the gel returns to its normal state. As does the mirror.