O COSMEDICS SKIN-INJECT MTS (Micro-Needling Therapy System) Derma Roller (0.25mm) utilises 600 gamma-sterilised, micro-needles to effectively and visibly rejuvenate and regenerate the skin’s own natural healing response. The independently rotating disks with advanced silicon suspension system provide the most comfortable and beneficial treatment possible, whilst reducing procedure downtime. How to use: At night before bed, first cleanse your skin and dry well. Roll over your face, neck and decolletage, and follow with serums and hydrator. After using the Derma Roller for some time, switch to applying a corrective serum just before rolling (and after cleansing), as this will assist with achieving the best results.