Feature:1. Provide Nutrition: Micro needle roller can be used to promote blood supply to hair follicles and thus provide more nutrition to hair follicles.2. Improve Absorption: Micro needling roller can also improve the absorption of external products, which is good for hair follicle development.3. Easy To Use: Place one end of the micro needle on the face and rotate it from top to bottom, left to right for 1 to 2 minutes with light pressure.4. Prevent Irritation: Micro needle scalp roller adopted 0.5mm needle length, which does not damage sensitive skin or cause severe irritation.5. Stainless Steel: Derma roller is made of excellent stainless steel material, sturdy and safe, not easy to break, which can be used for a long time.Specification:Item Type: Micro Needle RollerMaterial: Stainless Steel, ABSNumber of Needles: 1200Model: SC1030Needle Length: Approx. 0.5 mm / 0.02 inch.Package List:1 x G4 Micro Needle Roller1 x Protection