What is the description of a 1X base?

• A. Equal to tool diameter; Most frequently used in perm design
• B. Twice the tool diameter; Produces a tighter curl
• C. Half the tool diameter; Increases lift
• D. One and a half diameters; Produces a fuller wrap

Answer: (A)

The base size describes how much of the rod’s diameter is used as the starting base at the scalp when wrapping. A 1X base means the base length is equal to the tool’s diameter. This is the standard starting point in perm design because it gives a balanced, predictable wrap that works well across many hair types and lengths. It provides consistent lift and curl from root to end, making it easy to achieve even results and to tailor with other wrap choices if needed.

Other base sizes change how much hair engages the rod near the scalp. A base smaller than the rod (for example) tends to increase lift and can produce a more open, voluminous look, while a base larger than the rod creates a fuller wrap with a different curl pattern and typically less lift. The 1X base’s equal-to-diameter description is why it’s the most commonly used in typical perm designs.