Which method requires only one paper for wrapping hair?

The method that requires only one paper for wrapping hair is the single flat wrap. This technique involves placing a single strip of perm paper directly over a section of hair being curled or treated. The hair is then wrapped around the perm rod or curling tool with the paper acting as a protective barrier between the hair and the rod. This method is efficient for providing support and containment of the hair during the chemical process while using minimal materials, making it an ideal choice in various styling situations.

In contrast, the double end wrap involves using two papers to secure the ends of the hair, which adds complexity and is better suited for longer hair or when extra protection is needed. The book end wrap utilizes two papers to cover the hair ends, maintaining a secure hold but requiring more materials. The curling wrap is a term that might refer to techniques involving curling without a specific wrapping method, rather than a set technique for chemical texturizing. Each of these alternatives employs multiple papers or differs in approach, highlighting why the single flat wrap is the simplest and most direct option.