Using bug spray as a headlight cleaner has gone viral online, with videos showcasing seemingly impressive results. However, this method actually damages your headlights. This article debunks the myth and explains why you should avoid using bug spray to clean your headlights.
Bug sprays often contain DEET (diethyltoluamide), a chemical effective in repelling insects. Unfortunately, DEET is also harsh and can disintegrate certain materials, including the polycarbonate plastics commonly used in headlight manufacturing. The apparent cleaning effect seen in viral videos is a result of DEET melting the headlight lens surface. This removes some oxidation and allows the oils in the bug spray to temporarily fill surface imperfections, creating a false sense of clarity.
This temporary fix has several significant drawbacks. Firstly, it only works on lightly oxidized headlights. Secondly, and more importantly, melting the lens surface causes substantial damage. Headlight lenses are coated with a UV protective layer to prevent oxidation and yellowing from sun exposure. The effectiveness of this coating varies depending on the manufacturer and your local UV index. Once the coating deteriorates, the lens begins to oxidize.
When DEET melts the lens, it strips away any remaining UV protection and mixes deteriorated plastic with potentially restorable plastic. While the lens might appear clearer initially, this is a fleeting effect, often lasting only until the next rain. You’re left with a severely damaged, unprotected lens that will deteriorate rapidly.
True headlight restoration involves a three-step process: complete removal of oxidation and damaged UV coating, resurfacing of the plastic, and application of a durable UV protective coating.
Don’t fall for the bug spray myth. It offers a temporary illusion of improvement while causing lasting damage to your headlights. Opt for professional restoration to ensure long-term clarity and protection.
