permanent wave
Quick Summary
A permanent wave, often called a perm, is a hairstyle created through both mechanical and chemical processes that result in long-lasting waves or curls in the hair. This technique involves wrapping the hair around rods and then applying chemical solutions to break down the hair's protein structure, allowing it to take the shape of the rod. After a period, a neutralizer is applied to reform the hair's bonds, setting the new wave pattern. The term "perm" can also be used as a verb, meaning to give hair a permanent wave. This method was first used in 1925.12
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.
