Derma Roller for hair growth.  192 titanium micro needles, 0.5mm depth to reach epidermis layer under scalp without bleeding.
Derma Roller causes low-level trauma to scalp epidermis layer which will encourage wound healing process creating new tissues.  Also it stimulates scalp's natural anti-aging agents as well as increasing blood circulation to the follicles.
It creates a pathway for Odjibik Root Activator Serum so that active ingredients can penetrate into the roots.