I purchased this based upon a Pinterest article suggesting that it could be used to restore the clouded/faded plastic tops of some outdoor solar lights that I use in the garden. The type of plastic used in these isn't known to be the same type that's used on automobile headlight and taillight lenses, for which this product is frequently used. But I thought it would be worth a try.It's easy enough to apply this creamy liquid to the surface, rub it in for a while, then remove it with a microfiber cloth before it dries out, as directed on the label. The lights on which I used it were quite clouded and weathered from being outdoors year 'round in the sun and all kinds of weather.Upon removing the the cleaner and buffing the surface with the microfiber cloth, I can say that there was definitely some improvement in the clarity of the plastic lens/cover, but I wouldn't characterize it as a 'restoration'. I tried a second application, which didn't seem to provide any additional clarity. But in this case, any improvement will be helpful in allowing more sunlight to reach the solar cells underneath to charge the batteries, so I'll proclaim this to be a moderately successful experiment.I also tried it on a solar birdbath fountain, which has been in use for the past two summers, and stored inside during the off-seasons. It's protective lens was very clouded, hiding from view the elements underneath that collect the sun's rays and turn them into electrical charges. I tried three applications of the polish on the surface, and achieved a greater degree of clarity than when I started, but that's about all I can say. Maybe I'm hoping for too much from this product. It helps, but it doesn't 'renew'.Fortunately, this was an inexpensive experiment, so I'm pleased to a degree with the results. I don't know how it would perform on a vehicle headlamp or taillight lens, which is the application many may users may have for it. But for my application, I'll give it an unenthusiastic rating of 'almost good enough'.
Rating: [5 of 5 Stars!]