The Rouge Bunny Rouge Face Contour brush (£46) is made with natural squirrel hair.
The hairs are extremely soft, and have a wonderful delicacy about them much like the blusher brush 002. Its an interesting shape, and I don't have a dupe in my collection, its quite short and flat without the typical slanted head of a lot of contour brushes.
It picks up a veil of product and deposits it seamlessly. I don't often contour, but when I do this works really well, and I don't get that obvious stripe mark. This brush also works well for blush application due to its concise shape and also for highlighting.
Here it is in the middle with the RBR powder and blusher brush.
The Rouge Bunny Rouge brushes are luxurious and the face brushes do come at quite a high price, however they are completely worth it in my opinion as I haven't found cheaper brushes that give comparable product laydown/finished look.
Rouge Bunny Rouge are available from zuneta.com
Disclosure: I was sent the Face Contour brush for free.