But the season's new curl trend shouldn't send you rushing out for that perm just yet - although once done, permanent curls do require less maintenance than temporary ones. Instead, experiment and ...

Perms, short for permanent waves, are chemical treatments that alter the structure of the hair to create curls or waves. This is achieved by breaking and reforming the disulfide bonds in the hair ...

Let us explain. Perms can be carried out to transform straight hair into permanent spirals and curls. They work by using chemicals to break and reset the hair bonds into waves or curls.