9. What chemical is used to stop the action of the waving lotion and hardens the hair into their new
form?
A. neutralizer
C. Cold wave
B. nitrogen
D. Perming chemical
10. Which of the following best described wavy hair?
A. slight curve or "s" shape pattern
B. Straight without bend or curls, zigzag pattern
C. defined curls or loop
D. tight curls, spirals or loops​