What tool is used to shape a bead of acrylic on the nail?

The sable brush is specifically designed to manipulate and shape a bead of acrylic on the nail. This tool, made from soft, fine hair, allows for precise control over the application and smoothing of the acrylic product. The brush aids in blending the acrylic seamlessly with the natural nail and other acrylic layers while also helping to create the desired shape, thickness, and overall aesthetic of the nail extension or enhancement.

In contrast, the other tools mentioned serve different purposes: foil wraps are typically used for processes like removing nail enhancements or for specific nail art techniques; files are used to refine the shape and smoothen the surface of nails after the product has been applied; and nail sticks, often made of wood or plastic, are utilized for pushing back cuticles and applying other nail products, but not for shaping acrylic. Therefore, the sable brush is the appropriate and specialized tool for shaping acrylic.