Crack on my 1 piece

i have a crack on the drivers side headlights. Its cracked from top to bottem and its at the corner about 2-3 inches from the fender. This may be my condensatin problem? What should i use to seal this crack? I am also planning on cleaning the headlights inside and re-sealing them for insurence…thanks

there was a guy on here who “covered” the crack by widening the silver strip on the corners of both sides of the car

what silver strip?