From website: Spa Sciences SORA is a state-of-the-art 3-speed rechargeable needling pen, delivering between 8,000-22,000+ precise movements per minute. With both micro and nano-needling capabilities, SORA effectively treats a range of skin concerns. Addressing acne, anti-aging, dry/oily skin, brightening and sagging all while building collagen and helping with product absorption for tighter, youthful skin. Damaging derma-rollers can puncture holes in the skin while rolling back and fourth which can spread bacteria and cause irritation. SORA uses sterile single-use cartridges going 1.75mm deeper than a roller stimulating the maximum amount of collagen and elastin. SORA ranges from 0.5mm-2mm in depth creating a customized experience for weekly use. Sustainably cheaper than expensive trips to the spa SORA offers a quality at home facial treatment that won't break the bank.