How does the process of perming work?

Answer 1

there are bonds in the hair, kind of like a metal link chain that are in place to determine the curl or straightness of the hair, a perm breaks those links, and sets them in a new position permentantly.

Answer 2

Perming involves chemically altering the disulfide bonds in hair to create a semi-permanent curl or wave pattern. The hair is first wrapped around rods, and a waving lotion is applied to break and reform the bonds. This process is followed by a neutralizer to stabilize the new bond configuration, setting the hair in its new curved shape.