I use a powder puff for loose powder because sometimes when you want to use a brush, it can smear the texture that you've already created using your stippling brush.
You can build it up stippling the beauty blender to a little bit more full coverage and as you can see it's the foundation is extremely pigmented has so much color in it.
I can actually just apply a little to the under eye and start to stipple it down into a triangle motion and that way you don't end up with too much product because I'm telling you less is more.