Final answer:
Thermal perming is the fastest process for perms, taking under two hours, while chemical perming can take several hours.
Step-by-step explanation:
When it comes to perms, the fastest process is typically the thermal method. In thermal perming, heat is used to break and rearrange the bonds in the hair. This process can be done relatively quickly, usually in under two hours.
On the other hand, chemical perming involves applying chemicals to the hair to achieve the desired curl or wave. This method takes longer than thermal perming as the chemicals need time to penetrate the hair shaft and rearrange its structure. Chemical perming can take several hours, depending on the specific type of perm and the desired result.
Therefore, if you're looking for a fast perm process, thermal perming would be your best choice.