A minimally invasive treatment in which tiny punctures are created in the skin using a pen device that holds a disposable cartridge housing micro-fine needles. Skin Expert Kate uses an adjustable pen to work with different depths of channelling. The needle can go from 0.5 to 2.5 millimetres deep into the skin, as needed. This treatment triggers the wound healing process within the body, and stimulates collagen and elastin production creating new skin tissue. The microneedling pen uses sterile, individually-sealed, and disposable needle cartridges for optimal comfort and patient safety.