Hair color corrections are not for the stylist who is the faint of heart. Same goes for the person who needs the hair color correction. They take lots of time and can not be rushed. After all a correction is not a basic hair color service, they are carefully calculated and sometimes the desired result is not achieved in one visit. Sometimes a correction can take one process and sometimes they take several processes. Hair color corrections should always have a detailed consultation. Usually they are charged by the number of processes that it takes to obtain the desired result. The client should be prepared to disclose all the previous processing so the stylist can be fully equipped with the proper knowledge to perform the service successfully.