✔DERMA ROLLER FOR ANTI-AGING, HAIR REGROWTH, WRINKLE REMOVAL, PIMPLE & ACNE SCARS, PIGMENTATION, STRETCH MARKS WITH 540 TITANIUM MICRO NEEDLES. ✔This Derma Roller (KDR) comes with 540 titanium alloy needles of various diameter (0.25mm to 2.5mm) for effective operation and is made of ABS for good durability. ✔It can be used for hair regrowth treatment as well as an anti-aging solutions and various treatment uses depends upon your needs. ✔The information presented below will not only make your skin supple but also rejuvenate your complexion! Collagen is a protein produced by the skin. ✔This Derma Roller provides the skin with smoothness and elasticity. ✔Collagen production decreases with age and weaken the skin structure. ✔This leads to fine lines, wrinkles, scars or stretch marks. If you are looking forward to improve your skin conditions permanently, your body must produce collagen.