Final answer:
Cross-sectioning is the technique that can prevent split or break in the front hairline.
Step-by-step explanation:
The sectioning technique that can prevent a split or break in the front hairline is called cross-sectioning.
Cross-sectioning involves dividing the hair into horizontal sections and cutting it in a graduated manner to create a softer, more blended effect at the front hairline. This helps to distribute the weight of the hair and reduce tension, preventing split ends or breakage.
For example, if someone has thick or heavy hair and wants to have bangs, cross-sectioning can ensure that the weight of the hair is evenly distributed and not concentrated at the front, reducing the risk of breakage at the hairline.