From the manufacturer
The FURminator(R) Ultimate Hair Reduction System
Brush: Daily combing keeps the coat clean of debris, free of tangles and looking nice by removing loose surface and topcoat hair.
deShed: Unlike brushing and combing, deShedding is done to remove the loose dead undercoat from the pet without cutting or damaging the topcoat, when used as directed.
Bathe: Regular shampooing and conditioning promotes a healthy skin and coat while reducing loose hair from shedding.
Discard: Easily dispose of excess pet hair collected by the tools for clean-up any time that takes minutes to complete.