Which technique is ideal for creating volume at the crown?

Backcombing is the ideal technique for creating volume at the crown because it involves teasing the hair at the roots to create a lifted effect. This process disrupts the hair cuticle slightly and adds texture, making the hair appear fuller and more voluminous. The technique encourages the hair to stand up rather than lay flat, which is essential when aiming for added height, particularly at the crown area.

In contrast, trimming is focused on removing length or maintaining the shape of the hair, which does not contribute to volume. Layering can provide some movement and shape to the hair, but it generally removes weight, which may not enhance volume in the crown area as effectively as backcombing. Blow drying can certainly help add volume, especially when combined with proper technique and products, but it does not directly manipulate the hair structure like backcombing does. Therefore, backcombing stands out as the most effective technique specifically for creating that desired lift and volume at the crown.