... on the areas and purposes of the treatment.It is more convenient to treat narrow area such as nose,around ... hygienic,convenient,and safe.The perpendicular movement of the needle tip enables treatment of narrow areas, and lessens the pain3.Improve efficiency ... . wrinkle removal/acne removal/improve scar, rejuvenationb. For the narrow focus of the site can be treated(glabella, depth, wrinkle, scar ...