Which product is used to equalize porosity before perming?

• A. Recondition
• B. Pre-wrapping product
• C. End papers
• D. Heat

Answer: (B)

Equalizing porosity before a perm means making the hair accept the waving solution evenly across all sections, so the curl pattern processes uniformly rather than unevenly due to differences in porosity. The pre-wrap product is designed for this step: it coats the hair and helps balance porosity, allowing the waving lotion to penetrate consistently from strand to strand. When porosity is uneven, some areas might overprocess while others underprocess, leading to unpredictable curls. By applying the pre-wrap product, you normalize the hair’s ability to absorb and hold the solution, which promotes predictable results and reduces processing errors. The other items don’t serve this preparatory purpose: reconditioning is for aftercare to restore moisture and strength, end papers are used for wrapping structure and end control, and heat is a processing aid used to speed or set the curl but not to balance porosity.