This 2004 GMC Canyon is an amazing truck, but here in Santa Cruz it is inevitable that any vehicle will require a headlight restoration. The client stated he had a hard time seeing at night, and was hopeful that a headlight restoration would solve this issue. As you can see, the clarity improvement is absolutely amazing. If you can see in to the headlight, the light can escape out from the headlight. Otherwise, the housing is blocking light and making it difficult to see. As an added benefit of headlight restoration, the headlights look beautiful now!