An oscillatory linear actuator comprising: an x-axis and a y-axis defining an x-y-plane, and a z-axis; a single fixed electromagnet comprising a coil oriented along the z-axis; an output movable element which is reciprocated in an x-axis direction by a periodically varying magnetic field generated from the electromagnet and performs work on body hair; a vibration absorbing movable element which is reciprocated by the periodically varying magnetic field generated from the electromagnet, comprises a second magnet having a south pole at one end and a north pole at the other end along the x-axis and reduces vibration of the oscillatory linear actuator, a frame which holds the output movable element and the vibration absorbing movable element wherein the vibration absorbing movable element is lighter in weight than the output movable element, the vibration absorbing movable element includes a second weight for weight adjustment, the output movable element includes a body which is cranked, a first weight, a first magnet having an opposite polarity to the polarity of the second magnet by having a north pole at one end and a south pole at an other end along the x-axis, a first yoke and a movable blade, the body includes an attachment part which is disposed on the x-y plane, a shaft and a weight support, the attachment part is attached to the frame, the first magnet and the first yoke are rigidly fixed to the attachment part, the attachment part comprises one end along the y-axis and an other, opposite, end along the y-axis, the shaft is disposed on the one end of the attachment part and extends along the z-axis, the movable blade is attached to the shaft, the first magnet and the second magnet being both disposed on a z-axis side of the coil, the weight support is disposed on a y-axis side of the coil and extends in the opposite direction to the shaft along the z-axis and from the other end of the attachment part, and holds the first weight. an x-axis and a y-axis defining an x-y-plane, and a z-axis; a single fixed electromagnet comprising a coil oriented along the z-axis; an output movable element which is reciprocated in an x-axis direction by a periodically varying magnetic field generated from the electromagnet and performs work on body hair; a vibration absorbing movable element which is reciprocated by the periodically varying magnetic field generated from the electromagnet, comprises a second magnet having a south pole at one end and a north pole at the other end along the x-axis and reduces vibration of the oscillatory linear actuator, a frame which holds the output movable element and the vibration absorbing movable element wherein the vibration absorbing movable element is lighter in weight than the output movable element, the vibration absorbing movable element includes a second weight for weight adjustment, the output movable element includes a body which is cranked, a first weight, a first magnet having an opposite polarity to the polarity of the second magnet by having a north pole at one end and a south pole at an other end along the x-axis, a first yoke and a movable blade, the body includes an attachment part which is disposed on the x-y plane, a shaft and a weight support, the attachment part is attached to the frame, the first magnet and the first yoke are rigidly fixed to the attachment part, the attachment part comprises one end along the y-axis and an other, opposite, end along the y-axis, the shaft is disposed on the one end of the attachment part and extends along the z-axis, the movable blade is attached to the shaft, the first magnet and the second magnet being both disposed on a z-axis side of the coil, the weight support is disposed on a y-axis side of the coil and extends in the opposite direction to the shaft along the z-axis and from the other end of the attachment part, and holds the first weight. the output movable element includes a body which is cranked, a first weight, a first magnet having an opposite polarity to the polarity of the second magnet by having a north pole at one end and a south pole at an other end along the x-axis, a first yoke and a movable blade, the body includes an attachment part which is disposed on the x-y plane, a shaft and a weight support, the attachment part is attached to the frame, the first magnet and the first yoke are rigidly fixed to the attachment part, the attachment part comprises one end along the y-axis and an other, opposite, end along the y-axis, the shaft is disposed on the one end of the attachment part and extends along the z-axis, the movable blade is attached to the shaft, the first magnet and the second magnet being both disposed on a z-axis side of the coil, the weight support is disposed on a y-axis side of the coil and extends in the opposite direction to the shaft along the z-axis and from the other end of the attachment part, and holds the first weight. a shaft and a weight support, the attachment part is attached to the frame, the first magnet and the first yoke are rigidly fixed to the attachment part, the attachment part comprises one end along the y-axis and an other, opposite, end along the y-axis, the shaft is disposed on the one end of the attachment part and extends along the z-axis, the movable blade is attached to the shaft, the first magnet and the second magnet being both disposed on a z-axis side of the coil, the weight support is disposed on a y-axis side of the coil and extends in the opposite direction to the shaft along the z-axis and from the other end of the attachment part, and holds the first weight.