How to use the zgts titanium roller: 1) the roller is moved across the area of skin to be treated in a series of sequential movements. 2) press firmly but do not overdo this to avoid any unnecessary discomfort. 3) one way of using a roller is to imitate the points of a compass and roll it front, left, right and then backwards. This ensures even coverage without overdoing it. 4) your skin will feel warm and tight after use and will have a reddish color similar to a case of mild sunburn. This is entirely normal and will ease within 24 hours. You can apply a skin care product to your skin which will help with this. 5) there should be no pain associated with the derma roller but what you will experience is a tickling sensation as you move the roller over your skin.