needling your way to healthier skin. microneedling was once viewed with skepticism, but it can be an effective procedure to improve the skin. skin microneedling uses pen-shaped or roller devices armed with fine needles to make minuscule, evenly spaced punctures in the skin. the small wounds created by the needling devices, which sometimes allow a pinprick of blood to rise to the surface, induce the skin to start a wound healing response. microneedling is what is referred to as a type of fractional treatment, in which only a fraction of the surface of the skin is affected, leaving skin unharmed around each micro-wound.