Which braid is created when the outside strands are crossed under the center strand?

The braid created when the outside strands are crossed under the center strand is indeed a 3-strand underbraid. This technique involves taking one of the outer strands and placing it under the center strand, followed by the other outer strand, which is also crossed under the center. This pattern continues down the length of the braid, resulting in a distinct look where the strands appear to be woven from underneath.

The terminology used in hairstyling is important, as it indicates the specific technique being applied. In an underbraid, the focus is on the motion of weaving the outer strands beneath the center, contrasting with an overbraid, where the strands are crossed over the center strand. Understanding this distinction is crucial for effective hairstyling, as the visual outcome and texture of each braid type differ significantly.