What technique is often used to blend hair lengths?

Layering is a technique commonly used to blend hair lengths by cutting the hair at varying lengths throughout the head. This method creates a more textured and voluminous appearance, as shorter pieces of hair help to frame the face and provide movement to the longer sections. It allows for a seamless transition between different lengths, making it easier to manage and style.

While other techniques like shingling, point cutting, and texturizing have their own unique purposes in hairstyling, they do not focus primarily on blending lengths. Shingling is typically used to create a layered look that emphasizes texture, point cutting involves cutting the ends of the hair at an angle to soften the appearance, and texturizing is more about removing bulk and adding movement rather than directly blending lengths. Layering is specifically designed to achieve a harmonious blend of hair lengths, making it the most suitable choice for this question.