There is a new product on the market called Blue Magic Headlight Lens Restorer which really eliminates the hazing and yellowing of plastic headlamp lenses. I just used it on my 2005 Crossfire after using it on my daughter's 1999 VW Jetta in the fall. The Jettas lenses were very yellowed and this product removed the yellowing as well as the haze and so far its lasted for 5 months. They have a website www.cargobluemagic.com for their products.