Compared with the derma roller, the derma stamp pen moves directly up and down during treatment, which causes vertically tiny micro needling wound while the derma roller moves in a rolling way causing upside-down triangle wound onto the skin. So the damage caused by microneedling stamp is way less than that caused by derma roller. The healing process after derma stamp treatment will be faster. Moreover, the needle length of derma stamp is adjustable, from 0.2mm to 3.0mm. Usually, needle length from 0.2-0.5mm is suitable for home use, from 0.5-1.0mm is for clinical use and 1.0-3.0mm is for physician use. The dermaq stamp all comes with an adjustment ring of needle length to make sure that the user can adjust it to a safe scale without hurting themselves. Also, different areas of skin has different thickness. A proper needle length for a specific skin area will avoid hurting other inner tissues during micro needling treatment.