Curl diffusion, also called chemical-blowout, is a technique used:

• A. To straighten all hair completely
• B. To loosen or relax the curl in tightly curled hair
• C. To curl hair more tightly
• D. To remove curl entirely

Answer: (B)

Curl diffusion is a controlled chemical process that loosens or relaxes the natural curl in tightly curled hair. The goal is to reduce curl strength so hair becomes easier to manage while preserving some wave, rather than turning it completely straight or removing curl entirely. This is achieved by applying a relaxing agent for a limited time and then neutralizing to stop the action and rebuild bonds. It’s different from methods meant to straighten all the hair or to create tighter curls, which is why the best choice describes loosening or relaxing the curl.