What tool is commonly used to push back cuticles?

The cuticle pusher is specifically designed for the purpose of gently pushing back the cuticles. This tool typically has a flat or rounded end that allows for precise maneuvering around the nail bed without damaging the skin or the nail itself. It is essential for nail care as it helps to maintain the health and appearance of the nails by making it easier to shape and prepare the nail for polish application or other nail enhancements. Using a cuticle pusher helps to create a clean line and can also promote better adhesion of nail products.

The other tools mentioned are intended for different aspects of nail care: nail clippers are used for trimming nails, a nail file shapes the edges of the nail, and a buffer smooths the surface of the nail and adds shine. While these tools are important in a nail technician's toolkit, they do not serve the function of pushing back cuticles, which is why the cuticle pusher is the correct choice.