Ecooking Derma roller stimulates the skin and retains the elasticity of the skin. To be used for: Dry acne/acne scars (do not use on acne in outbreak), Enlarged/deep pores, Reduction of scars after surgery or burns, Pigmentation or uneven skin color, Reduction of wrinkles or fine lines, Tightening of loose/sagging skin, Normalization of oily skin, Rough skin texture.