An oral care device comprising: a handle portion; an oral care implement coupled to the handle portion, the oral care implement comprising a brush head portion comprising brush filaments; a first electrode located in the brush head portion and operable to be in electrical contact with an oral cavity of a user; a second electrode located in the handle portion and operable to be in electrical contact with a hand of the user; an impedance element within the oral care implement and electrically coupled to the first electrode, wherein the impedance element comprises a predetermined impedance characteristic; a power source providing a voltage potential between the first electrode and the second electrode; a controller circuit in electrical communication with the first electrode, the second electrode, the impedance element, and the power source, wherein: electrical contact of the second electrode at the hand of the user and electrical contact of the first electrode at the oral cavity of the user completes an electrical circuit between the first electrode and the second electrode; the controller circuit determines an impedance of the oral care implement, wherein the impedance element of the oral care implement affects the determined impedance; the controller circuit generates a micro-current I through the user between the first electrode and the second electrode at a first micro-current amplitude when the impedance is within a first impedance range; characterised in that the controller circuit generates the micro-current I through the user between the first electrode and the second electrode at a second micro-current amplitude when the impedance is within a second impedance range. a handle portion; an oral care implement coupled to the handle portion, the oral care implement comprising a brush head portion comprising brush filaments; a first electrode located in the brush head portion and operable to be in electrical contact with an oral cavity of a user; a second electrode located in the handle portion and operable to be in electrical contact with a hand of the user; an impedance element within the oral care implement and electrically coupled to the first electrode, wherein the impedance element comprises a predetermined impedance characteristic; a power source providing a voltage potential between the first electrode and the second electrode; a controller circuit in electrical communication with the first electrode, the second electrode, the impedance element, and the power source, wherein: electrical contact of the second electrode at the hand of the user and electrical contact of the first electrode at the oral cavity of the user completes an electrical circuit between the first electrode and the second electrode; the controller circuit determines an impedance of the oral care implement, wherein the impedance element of the oral care implement affects the determined impedance; the controller circuit generates a micro-current I through the user between the first electrode and the second electrode at a first micro-current amplitude when the impedance is within a first impedance range; characterised in that the controller circuit generates the micro-current I through the user between the first electrode and the second electrode at a second micro-current amplitude when the impedance is within a second impedance range. an impedance element within the oral care implement and electrically coupled to the first electrode, wherein the impedance element comprises a predetermined impedance characteristic; a power source providing a voltage potential between the first electrode and the second electrode; a controller circuit in electrical communication with the first electrode, the second electrode, the impedance element, and the power source, wherein: electrical contact of the second electrode at the hand of the user and electrical contact of the first electrode at the oral cavity of the user completes an electrical circuit between the first electrode and the second electrode; the controller circuit determines an impedance of the oral care implement, wherein the impedance element of the oral care implement affects the determined impedance; the controller circuit generates a micro-current I through the user between the first electrode and the second electrode at a first micro-current amplitude when the impedance is within a first impedance range; characterised in that the controller circuit generates the micro-current I through the user between the first electrode and the second electrode at a second micro-current amplitude when the impedance is within a second impedance range. electrical contact of the second electrode at the hand of the user and electrical contact of the first electrode at the oral cavity of the user completes an electrical circuit between the first electrode and the second electrode; the controller circuit determines an impedance of the oral care implement, wherein the impedance element of the oral care implement affects the determined impedance; the controller circuit generates a micro-current I through the user between the first electrode and the second electrode at a first micro-current amplitude when the impedance is within a first impedance range; characterised in that the controller circuit generates the micro-current I through the user between the first electrode and the second electrode at a second micro-current amplitude when the impedance is within a second impedance range.