Really spend a good amount of time scraping out the old sealant from the headlights, and then use a good amount of new stuff. I spent more time on my 2nd set, and used some 3M adhesive remove and rubbing alchohal to help break it down faster & it helped a lot. Now I only get condensation after a heavy rain or if it's damp/muggy out and the engine is warm. Before I would just wash the car and get it.
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