Your complex bodies were created with amazing preprogrammed abilities including the ability to heal  from within, on all levels.  When you cut yourself the body will mount a healing response which will initiate healing.  A scab will form over the cut to protect it for a specified period of time during the healing process. The properly functioning body, initiates the same type of automatic healing response on a larger scale throughout the body on a daily basis as required.  Detoxification, another normal ongoing body process, is an important part of proper functioning and healing.