There is also a men's electric razor for sideburns and mustaches. Sells for about 20.00, available any store that sell electric razors. Separate the fabrics and slide the razor along the stitches. Saw this demo at a quilt show, and I thought it very awkward, seems as one would need to have 3 hands. One for each piece of fabric and one for the razor.
But I will consider the eyebrow razor/trimmer.