Smashbox Face & Body Brush #19 is mostly a bronzer brush, though as the Smashbox people mentioned, it's also good for various finishing powders and their Soft Lights illuminator (why doesn't this product get the love it deserves? It gives a fabulous finish). However, I keep the Face & Body Brush #19 in my bronzer drawer and use it for this purpose.
There are two main features that make the Smashbox Face & Body Brush #19 an excellent tool. First the shape with the comfortable longish handle that allows more control than you get from a regular size Kabuki brush. I especially like the handle when using the brush to add color to my neck and upper chest. The second notable thing is softness. While Smashbox Face & Body #19 is as dense as such a brush should be (=very), it's also wonderfully soft and pleasing to use. My Sephora Professional #44 (from about 6-7 years ago, as you can see it has the older logo) is very rough and scratchy and I can't think of the last time I actually used it on my face. It's exactly half the price of the Smashbox (and a similar NARS brush that I don't own), and worth even less.
Smashbox line is all PETA-approved though not vegan. The natural hair brushes are all made of unharmed animals and promise to be cruelty-free. Thus, the ingredients mentioned for Face & Body Brush #19 are wood handle and "squirrel sub" for the hair. The little research I did shows that this usually means goat. In any case, the brush is beautiful soft.
The comparison shots also have two synthetic Kabuki brushes. One is the popular Makeup For ever HD Kabuki brush, which I have to say is not holding its shape as well as it should, and the other one is the excellent Alison Raffaele Kabuki Powder brush, which I've had for years and still looks and feels like new. These two are not bronzing brushes and I only use them for powder and for blending, so it's more of a size comparison.
Bottom Line: highly recommended.
Smashbox Face & Body Brush #19 ($52) is available from Nordstrom, Sephora, Ulta and smashbox.com.
All photos are mine.