Yes, this very small brush is the most amazing brush i have ever used... The one i bought is from coastal scents and costs $5.95, but actually when i went to check the price of it for this post I found out its 20% right now! So if you you're wanting it, now is the time to consider getting it!
This is the Synthetic Domed Mini Kabuki Brush, there is a larger one but trust me... this is the perfect size! It fits in all of the small areas of your face and works great for the under eye area. Its also VERY soft, i love how soft it is...oh, and its super dense too. I honestly have been using this brush for everything... it applies mineral powder amazingly, it does a really good job with liquid foundation although i've never been a fan of using a brush for liquid heh. I also use it for blush and contouring/highlighting. Usually when i do a 'rave review' of something i'm worried about the product not working for others... but i really do think this little brush is so handy to have around. If someone happens to have this and maybe doesn't like it then let me know in the comments. :)
*Hopefully you can tell how small it is by the picture i took, but trust me it's actually the perfect size for the whole face.