After unwinding the perm rod 1.5 times, a positive test curl resembles which pattern?

After unwinding the perm rod 1.5 times, a positive test curl resembles which pattern?

• A. S-pattern
• B. Z-pattern
• C. C-pattern
• D. W-pattern

Answer: (A)

The pattern you’re looking for on a test curl is the smooth, single-direction arc that forms along the strand when you unwind the rod partway. When you unwind the perm rod about 1.5 turns and the curl shows an S-shaped pattern, it means the hair has relaxed and bent into a continuous curve around the rod, indicating the bonds have rearranged correctly to produce a true curl for that rod size. This is what a positive test curl looks like for a properly processed strand. If the curl were mapped as a zigzag (overlapping directions) or a straight or jagged shape, it would suggest overprocessing or underprocessing, respectively, and wouldn’t be the expected result for a correctly processed curl.

The pattern you’re looking for on a test curl is the smooth, single-direction arc that forms along the strand when you unwind the rod partway. When you unwind the perm rod about 1.5 turns and the curl shows an S-shaped pattern, it means the hair has relaxed and bent into a continuous curve around the rod, indicating the bonds have rearranged correctly to produce a true curl for that rod size. This is what a positive test curl looks like for a properly processed strand. If the curl were mapped as a zigzag (overlapping directions) or a straight or jagged shape, it would suggest overprocessing or underprocessing, respectively, and wouldn’t be the expected result for a correctly processed curl.