Airedale Haircut - Step Nine by Becky Preston
You can also clip the hair from the lower edge of the lip. This will help when clipping the underside of the muzzle. Stretch the lip by inserting a finger and pulling the lips straight back. This will help prevent accidentally cutting the lip. Clip to the fold of skin about 2/3 of the way up the lip. Be very careful not to cut the lip.