Roller is a handheld device with 540 titanium alloy microneedles that are used to improve the absorption of topical applicators for improved nourishment of hair & skin Removes very deep wrinkles, hyperpigmentation and reduces acne scars; Reduces stretch marks and cellulite The micro-needles penetrate just deep enough to boost your circulation and cause new production of cells. Usage:- 1) The roller is moved across the area of the 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 its front, left, right, and then backward. This ensures even coverage without overdoing it. These rollers can help improve product absorption, making your skincare products work more efficiently