Re: I need replacement headlamps assys
I don't think that I would use anything as abrasive as to "sand" the lens. And the paint analogy doesn't apply to clear plastic. The surface yellowing/clouding common to plastic lenses is easily removed with plastic polish, no sanding required. I haven't tried Stromberg's product, and it must work, but I would hate to be misunderstood and have somebody "sand" their plastic lens. The plastic lens polish is easy to use, it works, it's cheap, and it lasts for at least six months in the California sun.
When it comes to paint, you sand paint to remove surface imperfections after painting or oxidation, but you do not wax it immediately afterward. First, you buff it with a mild abrasive polish to bring out the shine, then you apply wax to protect the now shiny paint. The same principle as with lens polish but WITHOUT sanding.