Yes, some vehicles imported into Australia show signs of yellowing and cracking of acrylic coating of the headlights after just 5-10 years. We have found numerous products, claiming "miracle cures", with little to no satisfactory miracle results. We are now using elbow grease and soapy wet and dry very fine, emery (sand) paper to remove ALL traces of the original protective coating. A full cover spray coating of clear acrylic is then applied. NOTE: It is the clear coating from new that yellows etc., not the actual headlight "glass/ lens". This is similar to the clear coating that is applied to gloss over car acrylic paint jobs, you will often see this coating lifting, bubbling, yellowing, degrading etc. etc. after just a few years.
Yes, some vehicles imported into Australia show signs of yellowing and cracking of acrylic coating of the headlights after just 5-10 years. We have found numerous products, claiming "miracle cures", with little to no satisfactory miracle results. We are now using elbow grease and soapy wet and dry very fine, emery (sand) paper to remove ALL traces of the original protective coating. A full cover spray coating of clear acrylic is then applied. NOTE: It is the clear coating from new that yellows etc., not the actual headlight "glass/ lens". This is similar to the clear coating that is applied to gloss over car acrylic paint jobs, you will often see this coating lifting, bubbling, yellowing, degrading etc. etc. after just a few years.