Which barbering technique is used to blend hair lengths seamlessly?

The scissor-over-comb technique is particularly effective for blending hair lengths seamlessly because it allows for precise control when cutting. This technique involves holding the comb in one hand while using scissors in the other to cut the hair that is held up by the comb. By positioning the scissors over the comb, barbers can create a gradual transition between different lengths, making it ideal for achieving smooth, blended finishes, especially in shorter hairstyles.

This method is also versatile, as it can be used on various hair types and styles, lending itself to detailed work that prevents harsh lines and creates a natural look. The other techniques, while useful in their own right, do not offer the same level of subtlety and blending capability as the scissor-over-comb technique.