This dematting comb ($13) works on the undercoat of thick-haired breeds including Keeshonds, Poodles, Malamutes and Shelties because it lifts the dead and shedding hair from the undermost layer of a coat. This grooming tool comes in short and long versions – the short teeth are better for shorter haired dogs, the long teeth for those including Pomeranians and Collies (because it gets past all that fur to the undercoat, leaving the top relatively undisturbed).
To learn what other tool the professionals use to get at this thick undercoat
This tool scares me . . . well, just the name. You wield this Shedding Blade ($7 and up) in long, smooth strokes to remove loose, ready-to-fall hair . . . and even works well on cats. As a bonus, you can use the flat end to help strip water off the coat after a bath or swim.