Definitely the wrong brush!
 

But at 11 weeks old, what's more important is to teach your pup to love being groomed! I bought a baby brush for mine and used it for several months almost every night just to get the positive experience going. I slowly progressed to a slighty harder brush, which to everyone else would also seem soft. She is now just over a year and we now use a natural bristle brush and she loves it. They have no undercoat, so you have to be careful. You should also not brush her while she is wet. I brush mine before her bath, dry her with a soft towel, and blow dry (another grooming step to be learned)using very warm but not hot heat, although she is just beginning to like spirts of hot!!! go figure! Once she is dry, I brush her with the bristle brush. I guess at this point you could use a slicker brush to finish her off, but honestly, my pup hates the slicker brush, so I only used it one time and tossed it out. The fur is like our hair. I gave some thought to how I might feel with a slicker brush. Yep, I tossed it out! To get tangles out I use a de-tangle comb which has teeth that roll so it doesn't get stuck in matts. Go slow, so you don't get it stuck and pull. If you brush your dog daily, you won't get matts nearly at all. When we do, I carefully cut as little as I have to to get the matt out and then continue with the comb. Remember, you're trying to teach her to love the experience of being groomed. Leave the brush around so you can pick it up often to help her get used to it. Stroke her as you brush her. Pretty soon, she'll be bringing you the brush!

Definitely the wrong brush!
 

But at 11 weeks old, what's more important is to teach your pup to love being groomed! I bought a baby brush for mine and used it for several months almost every night just to get the positive experience going. I slowly progressed to a slighty harder brush, which to everyone else would also seem soft. She is now just over a year and we now use a natural bristle brush and she loves it. They have no undercoat, so you have to be careful. You should also not brush her while she is wet. I brush mine before her bath, dry her with a soft towel, and blow dry using very warm but not hot heat, although she is just beginning to like spirts of hot!!! go figure! Once she is dry, I brush her with the bristle brush. I think this is the point where you can use a slicker brush to finish her off. To get tangles out I use a de-tangle comb which has teeth that roll so it doesn't get stuck in matts. If you brush your dog daily, you won't get matts nearly at all. When we do, I carefully cut as little as I have to to get the matt out and then continue with the comb. Remember, you're trying to teach her to love the experience of being groomed. Leave the brush around so you can pick it up often to help her get used to it. Stroke her as you brush her. Pretty soon, she'll be bringing you the brush!

Well, after using the pin brush for a few days, I've changed my opinion. I like the pin brush :thumbup: because it makes his hair silky, shiny, and soft. Unlike the slicker brush where he wouldn't stay still, he is motionless and seems to enjoy the pin brush

Sorry, but I would tell that bf if he wants to use the slicker so bad he can use it on his head. stubborn or not, I would never keep anything around that could hurt my kiddos. I cannot imagine using one on a yorkie!