Because perms employ such harsh chemicals, it's important to use a light conditioner designed for chemically treated hair. Contrary to popular belief, the right conditioner won't ruin a perm. In fact, it will assist in keeping permed hair from drying out.
Another essential tip for the upkeep of a permanent involves trimming the permed hair every 4-6 weeks. The regular trims allow the curls to stay springy and keep the hair from being weighed down by length.