Dr. Pen Al Derma Pen Auto Micro needle Therapy System Dr. Pen has arrived. The same technology used by beauty Salon & spa’s is now available for home use and for a fraction of the cost. The Dr. Pen derma pen adopts the newest technology so you can control the speed of vibration and the needle length. This allows you to reach maximum results in all areas of the skin. With 5 different vibration speeds and 0.25mm-3.0mm adjustable.