What’s the difference between the derma roller and the derma pens?Updated a year ago

The derma rollers are less sophisticated than the motorised Dr Pen devices. You can’t adjust the needle depth or change the speed levels as they're only hand operated, whereas Dr Pen devices have a motor. They are also harder to roll in smaller areas. However, derma rollers are a great device for beginners or anyone who might prefer a more budget option.