If your carbon fiber hood has started to fade, there are a few things you can do to try and restore it. First, wash the hood with a mild soap and water solution. If this doesn't work, you can try using a stronger cleaner like rubbing alcohol or vinegar. If the fading is due to UV damage, you can try using a UV protectant spray or wax. You may also want to consider having the hood professionally refinished if the fading is severe.