Scalp Roller for Dry Scalp, Itch Relief & Hair GrowthFinally the solution to maintain a healthy scalp that is always exposed. This easy to use Scalp Roller uses Cryotherapy to soothe your scalp, promote blood circulation, reduce itching, refresh and release tension in the muscles. Cryotherapy = Freeze Therapy. So all you have to do is freeze it, take it out and roll it on your scalp for instant relief. Using the roller regularly for 20 minutes per day will help: Improve blood circulation Stimulate Hair