Final answer:
Chemical straightening or relaxing is the process of rearranging extremely curly hair into a straighter or smoother form.
Step-by-step explanation:
The process of rearranging extremely curly hair into a straighter or smoother form is chemical straightening or relaxing. In this process, chemicals are applied to the hair, which is then wrapped around forms to produce straight hairstyles. Thermal methods can also be used to temporarily straighten hair.