What length of hair is the spiral technique most often used on?

The spiral technique is most effective on medium to long hair because this hair length allows for the necessary movement and flexibility required to achieve the desired curl pattern. This technique involves wrapping the hair around a rod or perm tool in a spiral manner, which creates a defined and bouncy curl that showcases the full potential of longer strands. When hair is too short, there may not be enough length to create the spiral effect, and the curls may end up tighter or not as defined. Conversely, very long hair can also be spiraled, but the most common application is typically seen in medium to long hair, where the technique can produce optimal results in terms of volume and shape. This is why medium to long hair is the ideal choice for the spiral technique.