This is TERRY Touche Veloutee Highlighting Concealer Brush in Porcelain.
I use this to cover the dark circles around my eyes. The packaging is a tube with a brush applicator on one end, and you push the other end to let the product flow within the bristles.
I do not use the brush, though. I find it too stiff, and it hurts my skin. I pinch the product off the bristles and apply it with my fingers again, dabbing around the eye area until it looks like reverse-racoon.
(Of course, this is just the beginning. we’re gonna do some blending when the foundation comes in.)