What is one of the main components required for all draping methods?

A protective barrier between the neck and cape is essential for all draping methods because it serves as a first line of defense to protect the client's skin from irritation or discomfort caused by the materials of the cape or any products that may be used during the service. This barrier—often a towel or a disposable neck strip—ensures that hair, chemicals, or water do not come into direct contact with the client’s skin, helping to maintain hygiene and comfort throughout the hair service.

In contrast, factors like a client's favorite color or a stylist’s certification do not contribute to the technical aspects of draping, and while towels are part of a draping setup, relying solely on a towel may not provide adequate protection without a proper barrier. Therefore, having a protective barrier is fundamental to proper draping practices in hair services.