A brush developed, tested, and perfected by celebrity makeup artist Ariel for precision setting and more. Brush Coverage: Buildable Bristle Type: Synthetic What Else You Need to Know: Using his expertise, Ariel created this Morphe X Ariel A14 Signature Precision Setting Brush with a fluffy, rounded tip. This fluffy, rounded brush is the greatest multiuse brush, he says. I use it for every step of makeup application. I couldn't complete my signature looks without it.