Does a relaxer curl or straighten hair? What is the difference? | Sally Beauty

Does a relaxer curl or straighten hair? What is the difference?

A relaxer is designed to straighten hair. A curl product (a "perm") first straightens the hair, then a waving lotion or "booster" is used with rollers to curl the hair. After curling, the hair is then neutralized, which is standard in the "perm" procedure.