What angle corresponds to on-base placement?

• A. 90°
• B. 135°
• C. 180°
• D. 45°

Answer: (B)

In perm wrapping, base placement describes how far the wrap sits on the tool’s base, which is shown by the angle the hair makes around the rod. On-base placement corresponds to the rod resting on its base against the scalp, producing a wrap where most of the hair sits on the base and the curl is strong at the root. That positioning is represented by 135 degrees. It’s larger than a right angle, indicating the wrap is more on the base than in a halfway or off-base position, which aligns with the goal of tighter curl and more lift at the scalp.

So the 135° angle is the on-base setting because it reflects wrapping the hair with the tool positioned on its base, yielding the desired base control. The other angles map to different base relationships (for example, 90° for a half-base and 45° for off-base), which produce different curl patterns and lift.