How to Refurbish Car Lights?
3 Answers
Car light refurbishment methods are as follows: 1. Polishing Refurbishment Method: Use sandpaper for grinding, followed by coarse wax and medium-coarse wax for polishing in sequence. The disadvantage is that edges and corners are difficult to polish, and the light transmittance of the lamp surface decreases after about two to three months. 2. Headlight Fumigation Repair Refurbishment Method: Utilize a heater with alcohol as a volatilizing agent, which forms a uniform filling effect on the uneven sandpaper marks on the lamp surface through the steam method.
When refurbishing headlights at home, I find the sanding method to be the most straightforward. First, pick a sunny day and either remove the headlights or work on them in place. Start by wiping off surface dirt with a damp cloth, then use coarse sandpaper (like 400-grit) to gently sand away the yellowed oxidation layer. Once smooth, progressively switch to finer sandpaper (800-grit, 1000-grit, or even 2000-grit) to polish the lens back to transparency. After sanding, clean thoroughly, let dry, and apply a layer of UV protectant or a specialized sealant spray to prevent future yellowing. The whole process takes about half an hour—cost-effective with great results. Just be careful not to sand too aggressively to avoid scratches. Doing this regularly significantly improves headlight brightness, making nighttime driving safer.
I think refurbishing car headlights is quite cost-effective, especially compared to the expense of replacing them. If you do it yourself, just buy a DIY kit, which is available online or at auto repair shops for a few dozen yuan. These kits usually include multiple sandpapers, cleaner, and protective spray. The process is straightforward: first, spray the cleaner to wash off dirt from the lens, then sand it step by step with sandpapers from coarse to fine, rinsing with water between each step to prevent particle residue. After sanding, spray on the UV protective layer, which dries in minutes and leaves the headlights looking crystal clear. In the long run, this can extend the lifespan of the headlights and reduce lighting issues caused by oxidation. The key points are to wear gloves to protect your hands and to check regularly after the job to prevent yellowing again.
