Titanium hair and beard regrowth roller has been designed to activate the body's restoration process after an injury. This process thereby allows the production of protein to aid the growth of hair follicles in the applied areas. The roller creates very tiny contacts points in thousands to stimulate endothelial? growth factor to stimulate growth.
The standard recommendation for home use by dermatologist is the 0.25mm size as it gives you the result and balance between safety and painless application.