... 1.5mm, 2.0mm, 2.5mm, 3.0mm Portable Microneedle Derma RollerI. Theory of Microneedle therapy Microneedle therapy uses a knead ... beauty, body slimming, hair regeneration, and effectively for skin anti-aging.II. Production Specifications* Roller Body: diameter 20mm X width 14mm* Disc: ... skin1.5, 2.0, 2.5mm ( Use for solutions of thick wrinkle, large pore, injury scar, pimple scar, severe decline of ...