Which technique helps in achieving volume at the roots when styling hair?

Backcombing is a technique specifically designed to create volume at the roots of the hair. This method involves teasing or ratting the hair by pulling sections of hair towards the scalp with a comb or brush, resulting in a lifted, fuller appearance at the base. When hair is backcombed, the strands are interwoven, creating a more substantial mass of hair that stands away from the scalp, giving the desired volume and height.

In styling, volume at the roots is essential for many looks, especially for updos and styles that benefit from a bouncy, voluminous effect. This technique can be especially beneficial for those with fine or limp hair, as it helps to create the illusion of thicker, more abundant hair.

Other techniques listed serve different purposes: flat ironing smooths and reduces volume; twisting involves creating curls or waves but does not specifically target root volume; and curling adds curls and body but typically does not achieve the same level of root lift as backcombing does.