How to improve the headlights of my Vauxhall Insignia?

I have a Vauxhall Insignia and I've noticed that the headlights are not as bright as they used to be. I want to make them brighter without having to replace the entire headlight assembly. Any suggestions?

One possible solution is to clean the headlight lenses with a headlight restoration kit. These kits usually come with a cleaning solution and sandpaper pad to remove any dirt or residue build-up from the lenses.

You can also try upgrading the bulbs to LED or HID bulbs. They are brighter and have a longer lifespan than traditional halogen bulbs. Just make sure to research the correct bulb size for your specific Insignia model.

Another option is to adjust the aim of your headlights. Over time, the headlights can become misaligned and may need to be readjusted. You can do this yourself or have a mechanic do it for you.