Well, my vets office told me to cut it out, If I were you i would take him/her to the Petsmart grooming place they cant make him/her really beautiful.
As a groomer, you never cut them out!. There are special tools for that. It is called a shedding blade, it looks like fingers (very sharp fingers!) curled like the top of a C. You can start at the bottom of the mat, pulling gently as you go.