how do you fix a drooping headliner?

Remove head liner from car,peel it back,carefull not to tear it,spray upholstery adhesive and relay it.

Or you can do it the red neck way,thumb tack it,,,but this i would not do.

If you go through the hassle of removing the headliner from the car, take the material off and clean the old glue and dried out foam off of the backer board. If the liner material is bad it can be replaced for about $35-40 at any fabric store like Joann Fabrics. If you're gonna do it, do it right the first time.

Yes tennisshoes is right 3M's spray adhesive is what I use as well. Great stuff.

I have a 01civic need to take sunroof panel off 01 civic

I have a 01civic need to take sunroof panel off 01 civic help please