Many years ago, (20+) when I got my first Yorkie, I was looking for the perfect brush.
I heard about Chris Christensen brushes and orderd a catalog. They have this brush called a 'Terrier Palm Pad'. It cost a lot $45., but I thought since the yorkie hair is so different, I purchased it.
One of the best purchases I have ever made.
It fits so nicely in the palm of your hand, it is a leather backing so it bends to get those little places.
If you look up Chris Christensen on the net, then look for the site that says 'Brushes and Slickers' go on that site, on the bottom of the page, click on 'tools' then you fill find 'terrier palm pad'. On that, it will say 'do the tip test.' It will explain how it will not scratch etc
I'm sure others have this too, but I see at time people are talking about those regular slicker brushes, and they do scratch and tear.
Anyway good luck. Hope you get one