A larger base size will have what effect on the curl strength?

A larger base size in perming generally leads to a reduction in curl strength. This is primarily because the size of the base affects how tightly the hair is wrapped around the curling rod. With a larger base, the hair has more room to move, which results in a softer and less defined curl compared to smaller bases that create tighter curls.

When hair is perm-wrapped around a large rod, the resulting curls tend to be looser and less resilient. The chemical process works best to create strong curls when the hair is wrapped tightly around smaller rods, as this allows for more effective penetration of the perm solution into the hair shaft, enhancing curl definition and strength. Therefore, using a larger base will lead to curls that are not only weaker in terms of hold but will also appear less structured.

In contrast, smaller bases lead to stronger curls because they restrict the movement of the hair more effectively, allowing the chemical treatment to form more defined and resilient curl patterns.