Leave the bonding glue on the surface of your suede couch long enough to dry and harden. Rub sandpaper over the hardened glue, moving it back and forth to wear the glue residue down to the suede.
Vacuum the bonding glue dust off your suede couch.
Moisten the tip of a cotton swab with acetone-based nail polish remover. Swipe the suede fibers that still have bonding glue on them. Continue to gently wipe the nail polish remover over the suede until the bonding glue residue is gone.
Dampen a clean cloth with white vinegar. Sponge the surface of your suede couch to clean it.
Press a dry cloth into the suede to absorb any excess moisture. Allow your suede upholstered couch to air-dry completely before using it.
Lift and blend the nap by brushing the suede upholstery with a suede brush.