Description: Item Type:Skin Roller;  Color:As seen on pictures;  Needles:192 pieces;  Needle size for choose:1.5mm/0.3mm/0.5mm;  Handle Length:App 9.5cm;  Roller Size:App1. 8cm(L);2cm(Diameter);  Material:Stainless steel micro needle;  Weight:About 84g;    Package included: 1 X Derma Roller.    Clean the roller: Wash thoroughly your derma roller unit, with water and soap. Brush away any residual debris after using it.  Then soak about 5-8 minutes with 90% alcohol, or use ultraviolet to disinfect for about 45 minutes.  You can also use a cold sterilizer like Clorexhidine solution.  Do not use chlorine, autoclaves, steam, and high-temperature sterilization methods.    How to use: Before use, clean your skin, rinse thoroughly and towel dry.  Simply use mild pressure gently without forcing the roller into the skin.  Roll 5-6 times per area vertically, horizontally and diagonally.  Clean under running warm water after use.    Caution: 1.The instrument can not be overused as the needles will remain sharp for a prolonged time;  2.Not suitable for use on the following skin condition: active acne , eczema, rosacea, psoriasis, severe solar keratosis, and raised moles or warts;  3.Keep out of reach of children.