Final answer:
The tool most often used by a barber when performing freehand techniques is the straight razor blade. It allows for clean and precise lines and shapes on the hair.
Step-by-step explanation:
The tool most often used by a barber when performing freehand techniques is the straight razor blade. The straight razor blade is a sharp, precision tool that allows the barber to create clean and precise lines and shapes on the hair. It is commonly used for techniques such as hair sculpting, outlining, and creating intricate designs.
For example, when performing a freehand haircut, the barber may use the straight razor blade to create precise and clean lines around the edges of the hair, giving it a polished and refined look. The barber can also use the blade to create intricate designs or patterns by carefully shaping and cutting the hair.
Additionally, the straight razor blade can be used for other techniques such as shaving and facial grooming. It is a versatile tool that requires skill and caution to ensure the safety and comfort of the client.