The dreaded mat can form on even the most well-groomed cats, especially during seasonal shedding. If you find these clumps of dried, tangled hair in your cat's fur, never try to cut them out because you could slip and cut your cat's skin. It is better to work out a mat with a grooming comb.
With one hand, try to hold the hair as close to its base as possible without pulling directly on the cat's skin. Hold the grooming comb in your other hand and use the tip to pick at the mat gently until it begins to loosen up. As it starts to break apart from the coat, it can easily be combed out. Repeat as necessary.