Variable depth adjustment allows for more effective and affordable treatment with a multitude of skin conditions requiring different needle length
Easier to treat small areas.
More affordable. depending on the lifespan of the device. (Tips cost less Than rollers)
Less discomfort.
Less risk of cross "contamination" using disposable needles.
Advantages of Rollers:
Single use
Faster treatment time for large areas.
Needles don't get hung up in scar tissue.
No need to adjust speed or needle length which reduces incidence of inadvertent contamination when you use gloves.
The pressure applied during treatment can be adjusted to light feathering over the eyelids, whereas the speed and depth of needles with pens is a constant. One can slow down and make very cautious calculated moves in high-risk areas with a roller.
