An LED lighting assembly including a plurality of individual LEDs mounted on a common, bendable heat sinking member designed to remove heat from the LEDs during operation and also to be formed to provide the desired light direction and intensity. A vinyl-urethane copolymer contains at least one vinyl polymer chain and at least one urethane polymer chain, in which the vinyl polymer chain is combined with the urethane polymer chain through a linkage segment having a silicon-oxygen bond. The magnetization sensor comprises a non-magnetic layer separating a hard magnetic layer and a soft magnetic layer, with electrical leads to provide a biasing and sensing current. The armature is moveable toward a forward position in response to the electromagnetic field produced by activation of the coil. The kit incorporates the exfoliating tool in combination with a skin exfoliating composition that is formulated with abrasive particles in a carrier vehicle.