A brush developed, tested, and perfected by celebrity makeup artist Ariel to flawlessly contour the complexion. Brush Formulation: Cream Brush Coverage: Buildable Bristle Type: Synthetic What Else You Need to Know: Using his expertise, Ariel created this Morphe X Ariel A58 Signature Cream Contour Brush that features densely packed bristles and a precision tapered tip. The densely packed bristles and tapered tip work together to flawlessly sculpt and build structure, he says.