This is the MAC Duo Fibre Face Brush #187 ($42)...well that's its official name anyway. Many lovingly refer to it as the skunk brush.
How versatile is it?
Well you could use it to apply any liquid, cream, or powder foundation. You could also use it to apply any cream or powder blush.
I've heard of many a makeup artist using this to buff the foundation after they've applied it, to give an airbrushed finish to the face.
If you have a highly pigmented blush, this will help to deliver a perfectly realistic application.
I've used mine for foundation application and blush application, using creamy and powdery formulas. I've also used it for bronzers as well.
How popular is it?
Head on over to the MUA Product Review Boards and check out the constant accolades it receives.
Check out some other Beauty Bloggers and this brush (or a reasonable facsimile) will top the list of their faves.
Do yourself a favor, the next time you are near a MAC counter or a MAC store, try out this brush. You won't be disappointed.
Or...if you are a fan of this brush already, leave a comment below.
photo courtesy of nordstom.com