Which technique is commonly used to ensure an even haircut?

Cross-checking is a fundamental technique used in haircutting to ensure an even and balanced result. This process involves taking sections of hair at a different angle than the initial cut and examining the previous cut lines to confirm that all hair lengths are uniform. By cross-checking, the barber can identify any inconsistencies or missed spots, allowing for adjustments to be made for a smoother, more precise finish.

In addition to providing an even haircut, cross-checking helps to enhance visibility of the cut from various angles, ensuring that the overall style aligns with the desired look. This technique is particularly important for layered styles or when fading hair, as it ensures that all areas are blended well and no harsh lines remain.

While other options like chunking or blending serve specific purposes in haircutting, they do not address the necessity of verifying the accuracy of a haircut after the initial cut is complete, making cross-checking the most reliable method for ensuring evenness throughout the style.