0.5mm Derma Roller is for basic level issue of the following: 1.Wrinkle removal, acne removal, improve scar, rejuvenation. 2.Improve wrinkle and fine lines. 3.The narrow focus of the site (glabellum, wrinkle, scar). 4.Shrink pores.5.Acne scarring6.Hyper-Pigmentation7.Fine lines and Wrinkles8.Loss of skin firmness9.Age Spots10.Hair Loss/ Alopecia How to use microneedle derma roller...