An oral care system that includes an oral care implement and a dispenser, an oral care method, and a method of whitening teeth. In one embodiment, the invention may be a method of whitening teeth that includes: providing a toothbrush having a handle and a detachable oral care agent dispenser supported by the handle, the dispenser including a reservoir containing a tooth whitening agent; decoupling the dispenser from the handle of the toothbrush; and applying the tooth whitening agent to an oral surface using the dispenser.