if you mean in one setting you will denude the puppy if you use the furminator daily for more than a few minutes at a time
there is a groomer on here that pops in and hopefully she can help you figure this out
FAQ Using a FURminator Which FURminator to Use | FURminator®
We recommend using the deShedding tool 1-2 times a week for 10-20 minutes each session. You may need to use the deShedding tool more frequently during heavy shedding seasons.
Before each use, you will want to read the deShedding tool instructions completely. Also, your pet should be free of mats and tangles.
if you mean over time yes grooming and brushing are lifelong requirements for coated dogs like gsds collies and huskies just to name a few