The basics Betty Dain Colortrak Detailing Brush was designed for precise painting trends like undercuts, glitter roots, sharp lines, as well as more traditional painting such as balayage and blending.  The benefits The ergonomic handle provides optimal comfort for the stylist, with additional grip at the base.  The uses The Detailing Brush is also perfect for eyebrows, as well as beard touch ups. The bottom line The tiered angles of the bristles give max control, allowing for extremely precise painting—while the ultra soft feather bristles allow for subtle blending of colors.