... , remove wrinkle, stretch mark, enhance cosmetic 1.microneedle therapy 2.Needle size; 0.2mm -3.0 mm 3. Anti wrinkle ... skin rolling or collagen induction therapy (CIT). Derma Rollers are made of many high grade micro needles which roll ... 45 minutes.Do not use autoclaves,steam and high temperature sterilization methods5,Caution1)Don't re-use ... *14.5*5cm/unit electric automatic micro needle therapy system