Which tool is typically used for achieving smooth edges in textured hair?

The correct choice is the razor, as it is specifically designed to create smooth, blended edges in textured hair. When working with textured hair, a razor can effectively remove bulk, enhance the natural movement of curls or waves, and create a softer finish without the blunt edges that scissors may produce. This technique helps maintain the shape of the haircut while allowing the hair's texture to shine through, making it a preferred tool for stylists aiming to achieve seamless lines and softer shapes.

In contrast, a comb is primarily a styling tool used for detangling or parting hair rather than cutting it. A blow dryer is used for drying and styling hair but does not actively cut or texturize hair. A round brush is typically employed during the blow-drying process to style hair, adding volume and curl, but it does not achieve the smoothing effect that a razor provides on textured hair. Each of these tools has its specific purposes, but for achieving the desired smooth edges in textured hair, the razor stands out as the most effective choice.