Derma pen is a auto electric device in form of a pen that allows the technique of skin micro needling, which uses the sharp needle to penetrate into the deep level skin, to stimulate the release of growth factors, cause the production of collagen and elastin. Treatments 1.Wrinkle removal,acne removal,improve scar,rejuvenation 2.The narrow focus of the site(glabellum,wrinkle,scar) 3.Shrink pores 4.Treatment of striate gravidarum 5.Improve wrinkle and fine lines 6.Treatment of acne scars and healing wounds 7.Anti-hair removal 8.Effective for kinds of skin care treatments. Needle length depth adjustable (0.25mm-2.5mm) Adjust the needle length by the adjustment ring Turning clockwise, needle length will be longer, counter clockwise, it will be shorter. 5 speed level control When turn on the power, speed starts from the l…